Skip to main content
U.S. flag

An official website of the United States government

Here’s how you know

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

HTTPS

Secure .gov websites use HTTPS
A lock (LockA locked padlock) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

    • Environmental Topics
    • Air
    • Bed Bugs
    • Cancer
    • Chemicals, Toxics, and Pesticide
    • Emergency Response
    • Environmental Information by Location
    • Health
    • Land, Waste, and Cleanup
    • Lead
    • Mold
    • Radon
    • Research
    • Science Topics
    • Water Topics
    • A-Z Topic Index
    • Laws & Regulations
    • By Business Sector
    • By Topic
    • Compliance
    • Enforcement
    • Laws and Executive Orders
    • Regulations
    • Report a Violation
    • Environmental Violations
    • Fraud, Waste or Abuse
    • About EPA
    • Our Mission and What We Do
    • Headquarters Offices
    • Regional Offices
    • Labs and Research Centers
    • Planning, Budget, and Results
    • Organization Chart
    • EPA History

Breadcrumb

  1. Home
  2. Superfund

USGS Background Soil-Lead Survey: State Data

National Interactive Map (Choose your State to Begin)

  • Back to USGS Soil Lead Survey

Map of the United StatesAlabamaArizonaArkansasCaliforniaColoradoConnecticutDelawareWashington, DCFloridaGeorgiaIdahoIllinoisIndianaIowaKansasKentuckyLouisianaMaineMarylandMassachussetsMichiganMinnesotaMississippiMissouriMontanaNebraskaNevadaNew HampshireNew JerseyNew MexicoNew YorkNorth CarolinaNorth DakotaOhioOklahomaOregonPennsylvaniaRhode IslandSouth CarolinaSouth DakotaTennesseeTexasTrust TerritoriesUtahVermontVirginiaWashingtonWest VirginiaWisconsinWyoming


Overview

Potential statistical 'outliers' were determined separately for each state. Specifically, outliers are defined here as soil lead results that are two and three standard deviations greater than the average. Spatial outliers were defined using Anselin's Local Moran's I statistic to identify observations that were statistically significantly different from other nearby observations.1 The spatial outliers include observations that are surrounded by observations with significantly lower concentrations. The definition of spatial outlier used here also includes local clusters of two or more observations with significantly higher concentrations than surrounding observations.

It is important to note that labeling an observation as an 'outlier' does not imply there is something necessarily 'wrong' with the observation; e.g., outliers should not automatically be omitted from an analysis or discarded as invalid. The method for handling outliers varies depending on the objectives of the analysis. Furthermore, there are many ways to define outliers; the definition that is used should support the objective of the analysis. The objective of this web site is to simply describe the data. The effect of the outliers on summary statistics of the data is illustrated by comparing the statistics in the tables provided below. The user is encouraged to download the data for further exploration and analysis, including a determination of which observations should be considered outliers, given the objectives of their analysis.

1 Anselin, 1995. Local Indicators of Spatial Association-LISA. Geographical Analysis, 27(2). April. 93-115 (PDF)(23 pp, 1.5 MB)


Alabama State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
85 14.2 0.8 15.6 7.6 0.534 0.3 9.6 12.2 17.4 24.9 29.6 39.3 39.3

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
83 13.6 0.7 14.8 6.6 0.484 0.3 9.1 12.1 17.1 23.9 28.0 31.8 31.8

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

Alabama Normal Percentiles
Alabama Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:


Arizona State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
177 23.7 1.3 25.9 17.9 0.753 6.3 15.7 20.1 26.3 35.6 42.5 123.0 161.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
173 21.4 0.7 22.5 8.8 0.411 6.3 15.6 20.0 26.1 32.7 39.2 50.8 59.0

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

Arizona Normal Percentiles
Arizona Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Arkansas State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
87 20.7 1.5 23.2 14.0 0.680 0.3 12.9 18.0 23.9 28.7 46.6 105.0 105.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
85 19.1 1.0 20.8 9.3 0.488 0.3 12.9 18.0 23.5 28.4 33.1 57.7 57.7

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

Arkansas Normal Percentiles
Arkansas Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

California State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
258 19.7 1.3 21.8 20.4 1.032 3.0 12.6 16.8 20.9 28.1 33.2 92.7 263.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
255 17.9 0.5 18.8 8.4 0.467 3.0 12.5 16.8 20.7 27.8 32.3 48.6 70.1

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

California Normal Percentiles
California Lognormal Percentiles

About These Charts:

These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Colorado State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
165 45.4 11.4 64.3 147.0 3.240 8.9 20.9 24.4 30.6 39.3 51.5 1010.0 1610.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
163 29.8 2.2 33.5 27.8 0.932 8.9 20.8 24.3 30.5 38.8 46.8 170.0 312.0

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

Colorado Normal Percentiles
Colorado Lognormal Percentiles

About These Charts:

These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Connecticut State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
9 49.9 8.1 65.0 24.3 0.487 19.1 30.6 38.2 68.8 88.8 88.8 88.8 88.8

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
9 49.9 8.1 65.0 24.3 0.487 19.1 30.6 38.2 68.8 88.8 88.8 88.8 88.8

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

Connecticut Normal Percentiles
Connecticut Lognormal Percentiles

About These Charts:

These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Delaware State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
2 18.2 4.4 46.0 6.2 0.342 13.8 13.8 18.2 22.6 22.6 22.6 22.6 22.6

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
2 18.2 4.4 46.0 6.2 0.342 13.8 13.8 18.2 22.6 22.6 22.6 22.6 22.6

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

Delaware Normal Percentiles

About These Charts:

These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Florida State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
89 6.4 0.5 7.3 4.8 0.753 0.3 2.5 4.7 11.1 11.3 14.0 29.0 29.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
88 6.2 0.5 6.9 4.2 0.683 0.3 2.5 4.7 11.1 11.3 13.5 16.3 16.3

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

Florida Normal Percentiles
Florida Lognormal Percentiles

About These Charts:

These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Georgia State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
94 13.2 0.9 14.7 8.9 0.670 2.7 6.7 11.4 15.8 25.1 31.0 53.0 53.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
93 12.8 0.8 14.2 7.9 0.615 2.7 6.7 11.4 14.7 24.4 29.5 38.7 38.7

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

Georgia Normal Percentiles
Georgia Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Idaho State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
131 25.2 4.3 32.3 48.8 1.936 5.5 15.2 18.5 21.9 26.6 32.7 158.0 541.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
130 21.2 1.6 23.9 18.0 0.846 5.5 15.2 18.4 21.8 26.6 32.2 119.0 158.0

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

Idaho Normal Percentiles
Idaho Lognormal Percentiles

About These Charts:

These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Illinois State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
88 26.4 1.2 28.5 11.5 0.434 14.0 20.3 24.0 28.1 38.4 47.0 103.0 103.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
87 25.6 0.9 27.0 8.0 0.314 14.0 20.2 23.8 28.0 36.5 45.6 54.1 54.1

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

Illinois Normal Percentiles
Illinois Lognormal Percentiles

About These Charts:

These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Indiana State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
57 30.7 7.2 42.8 54.4 1.771 8.2 18.6 21.0 25.7 29.5 78.5 423.0 423.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
56 23.7 1.7 26.6 13.0 0.547 8.2 18.6 21.0 25.5 28.8 47.3 83.9 83.9

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

Indiana Normal Percentiles
Indiana Lognormal Percentiles

About These Charts:

These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Iowa State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
91 23.1 0.7 24.1 6.2 0.270 8.4 19.4 21.7 25.3 29.9 35.0 48.5 48.5

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
89 22.5 0.5 23.4 5.1 0.229 8.4 19.4 21.6 24.7 29.8 32.5 38.2 38.2

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

Iowa Normal Percentiles
Iowa Lognormal Percentiles

About These Charts:

These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Kansas State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
132 26.6 3.3 32.0 37.9 1.427 9.8 19.1 21.3 25.9 32.4 38.0 66.9 450.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
131 23.3 0.7 24.5 7.7 0.332 9.8 19.0 21.3 25.9 31.8 37.7 51.9 66.9

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date

Charts

Kansas Normal Percentiles
Kansas Lognormal Percentiles

About These Charts:

These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Kentucky State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
64 29.2 2.5 33.3 20.1 0.689 12.4 19.0 22.4 28.9 43.6 85.9 111.0 111.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
61 25.7 1.6 28.4 12.5 0.488 12.4 19.0 22.3 26.5 38.7 43.6 85.9 85.9

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

Kentucky Normal Percentiles
Kentucky Lognormal Percentiles

About These Charts:

These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Louisiana State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
75 21.2 1.6 23.9 14.0 0.659 6.7 11.8 18.7 25.7 34.1 46.7 90.8 90.8

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
73 19.5 1.1 21.2 9.0 0.464 6.7 11.8 18.3 24.8 31.8 36.2 47.2 47.2

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

Louisiana Normal Percentiles
Louisiana Lognormal Percentiles

About These Charts:

These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Maine State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
53 35.4 5.6 44.7 40.4 1.142 7.2 19.2 22.9 32.1 59.4 91.7 233.0 233.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
51 28.1 2.2 31.8 15.9 0.567 7.2 19.1 22.6 31.1 43.2 68.4 91.7 91.7

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

Maine Normal Percentiles
Maine Lognormal Percentiles

About These Charts:

These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Maryland State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
18 42.2 8.8 57.5 37.1 0.879 11.7 19.0 27.6 45.9 117.0 150.0 150.0 150.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
18 42.2 8.8 57.5 37.1 0.879 11.7 19.0 27.6 45.9 117.0 150.0 150.0 150.0

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

Maryland Normal Percentiles
Maryland Lognormal Percentiles

About These Charts:

These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Massachusetts State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev

Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
14 72.2 20.6 108.6 77.0 1.067 24.2 34.2 53.4 71.6 109.0 327.0 327.0 327.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev

Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
13 52.6 6.8 64.7 24.5 0.466 24.2 34.2 44.3 64.9 76.4 109.0 109.0 109.0

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

Massachusetts Normal Percentiles
Massachusetts Lognormal Percentiles

About These Charts:

These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Michigan State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
95 17.1 0.8 18.4 7.4 0.432 8.3 12.6 15.2 18.5 28.0 31.2 56.6 56.6

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
93 16.4 0.6 17.4 5.7 0.347 8.3 12.6 15.1 18.2 24.5 28.9 35.6 35.6

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

Michigan Normal Percentiles
Michigan Lognormal Percentiles

About These Charts:

These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Minnesota State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
137 16.6 0.4 17.3 4.9 0.292 3.6 13.7 16.1 18.2 21.8 26.6 34.6 37.2

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
134 16.2 0.4 16.8 4.1 0.251 3.6 13.5 16.0 18.2 20.8 22.8 29.2 29.8

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

Minnesota Normal Percentiles
Minnesota Lognormal Percentiles

About These Charts:

These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Mississippi State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
77 22.2 2.8 26.9 24.7 1.110 4.5 12.7 16.4 21.8 33.6 52.7 181.0 181.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
75 18.6 1.2 20.6 10.3 0.552 4.5 12.3 16.0 21.6 32.0 43.1 55.1 55.1

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

Mississippi Normal Percentiles
Mississippi Lognormal Percentiles

About These Charts:

These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Missouri State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
115 29.2 2.8 33.9 30.5 1.044 9.3 20.0 24.0 28.4 36.9 47.1 176.0 298.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
113 25.5 0.9 27.0 9.7 0.380 9.3 20.0 23.9 27.8 35.7 42.1 57.9 87.0

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

Missouri Normal Percentiles
Missouri Lognormal Percentiles

About These Charts:

These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Montana State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
239 19.8 0.7 21.0 10.9 0.550 4.2 14.6 17.2 21.1 27.5 40.3 61.9 113.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
232 18.4 0.4 19.1 6.5 0.352 4.2 14.6 17.2 20.6 25.2 31.6 42.3 47.4

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

Montana Normal Percentiles
Montana Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Nebraska State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
130 18.9 0.8 20.3 9.4 0.495 9.1 14.8 18.5 21.6 25.2 26.4 29.2 110.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
129 18.2 0.4 18.9 4.8 0.264 9.1 14.8 18.5 21.5 24.8 26.3 28.9 29.2

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

Nebraska Normal Percentiles
Nebraska Lognormal Percentiles

About These Charts:

These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Nevada State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
171 80.2 58.4 176.7 763.1 9.521 6.1 16.8 21.1 25.5 30.2 33.0 76.5 10000.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
170 21.8 0.6 22.8 7.8 0.356 6.1 16.8 21.1 25.2 30.1 31.3 50.3 76.5

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

Nevada Normal Percentiles
Nevada Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

New Hampshire State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
15 54.6 10.9 73.7 42.0 0.770 20.4 28.1 36.2 73.5 112.0 174.0 174.0 174.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
15 54.6 10.9 73.7 42.0 0.770 20.4 28.1 36.2 73.5 112.0 174.0 174.0 174.0

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date

Charts

New Hampshire Normal Percentiles
New Hampshire Lognormal Percentiles

About These Charts:

These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

New Jersey State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
13 75.5 29.3 127.7 105.6 1.399 13.1 20.8 22.7 104.0 142.0 398.0 398.0 398.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
12 48.6 12.6 71.3 43.8 0.901 13.1 20.5 22.7 79.9 106.0 142.0 142.0 142.0

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

New Jersey Normal Percentiles
New Jersey Lognormal Percentiles

About These Charts:

These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

New Mexico State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
203 16.3 0.4 17.0 6.4 0.390 1.1 12.4 15.8 19.3 24.4 26.9 39.1 43.9

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
200 15.9 0.4 16.6 5.6 0.353 1.1 12.3 15.8 18.9 24.1 26.0 29.7 30.3

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

New Mexico Normal Percentiles
New Mexico Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

New York State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
72 43.0 5.4 52.0 45.4 1.055 10.2 20.6 28.6 45.4 69.4 98.1 276.0 276.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
70 36.4 2.7 41.0 22.9 0.628 10.2 20.4 27.8 43.8 68.6 90.9 112.0 112.0

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

New York Normal Percentiles
New York Lognormal Percentiles

About These Charts:

These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

North Carolina State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
83 21.3 1.6 23.9 14.2 0.665 1.5 13.1 19.4 26.2 32.4 37.3 114.0 114.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
82 20.2 1.1 22.0 9.8 0.487 1.5 13.1 19.4 24.8 32.1 36.6 50.9 50.9

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

North Carolina Normal Percentiles
North Carolina Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

North Dakota State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
118 13.6 0.2 13.9 2.4 0.177 8.6 12.0 13.3 14.7 16.0 18.0 22.2 25.1

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
116 13.4 0.2 13.7 2.0 0.150 8.6 12.0 13.3 14.7 15.6 17.8 18.7 18.9

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

North Dakota Normal Percentiles
North Dakota Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Ohio State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
68 33.9 2.0 37.3 16.9 0.498 16.6 25.7 30.0 37.5 47.4 49.6 148.0 148.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
67 32.2 1.2 34.1 9.4 0.293 16.6 25.6 29.8 37.5 43.9 48.9 75.0 75.0

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

Ohio Normal Percentiles
Ohio Lognormal Percentiles

About These Charts:

These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Oklahoma State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
112 17.1 1.1 18.9 12.1 0.708 5.3 11.5 13.7 18.4 24.1 41.1 47.6 109.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
111 16.2 0.8 17.5 8.3 0.514 5.3 11.4 13.7 18.2 23.6 40.7 46.4 47.6

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

Oklahoma Normal Percentiles
Oklahoma Lognormal Percentiles

About These Charts:

These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Oregon State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
152 15.5 0.9 17.1 11.6 0.749 2.7 10.6 13.5 16.9 23.0 26.9 65.1 126.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
150 14.4 0.5 15.3 6.1 0.421 2.7 10.6 13.4 16.8 22.1 24.9 34.4 44.7

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

Oregon Normal Percentiles
Oregon Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Pennsylvania State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
75 60.2 5.3 68.9 45.6 0.758 14.7 31.8 46.4 69.3 118.0 153.0 261.0 261.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
73 55.0 3.9 61.4 33.2 0.605 14.7 31.8 46.1 66.5 105.0 132.0 161.0 161.0

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

Pennsylvania Normal Percentiles
Pennsylvania Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Rhode Island State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
1 44.4 - - - - 44.4 44.4 44.4 44.4 44.4 44.4 44.4 44.4

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Insufficient sample size

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

No charts available due to insufficient sample size.

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

South Carolina State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
50 15.9 2.0 19.2 13.9 0.870 4.0 7.5 11.9 21.8 29.6 33.4 89.4 89.4

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
49 14.4 1.3 16.6 9.0 0.625 4.0 7.5 11.7 21.2 28.2 33.0 34.8 34.8

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date

Charts

South Carolina Normal Percentiles
South Carolina Lognormal Percentiles

About These Charts:

These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

South Dakota State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
120 17.3 0.3 17.8 3.6 0.207 10.7 14.9 17.1 19.2 22.1 23.2 28.0 32.9

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
119 17.2 0.3 17.7 3.3 0.192 10.7 14.8 17.0 19.1 22.0 23.1 24.3 28.0

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts
 

South Dakota Normal Percentiles
South Dakota Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Tennessee State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
66 25.3 2.1 28.7 16.7 0.662 11.5 18.8 21.5 27.5 33.7 42.5 138.0 138.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
65 23.5 1.1 25.4 9.1 0.386 11.5 18.8 21.5 26.8 31.4 38.2 70.5 70.5

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

Tennessee Normal Percentiles
Tennessee Lognormal Percentiles

About These Charts:

These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Texas State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
431 16.1 0.6 17.0 11.5 0.715 3.1 10.7 14.2 18.7 23.3 27.8 69.4 142.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
425 15.0 0.3 15.5 6.1 0.406 3.1 10.6 14.1 18.3 23.0 25.7 36.5 40.3

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

Texas Normal Percentiles
Texas Lognormal Percentiles

About These Charts:

These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Utah State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
131 18.7 1.2 20.6 13.4 0.716 0.9 13.0 14.9 22.3 28.9 35.7 66.1 133.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
129 17.4 0.7 18.5 7.8 0.445 0.9 13.0 14.8 21.5 28.3 33.8 44.2 46.1

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date

Charts

Utah Normal Percentiles
Utah Lognormal Percentiles

About These Charts:

These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Vermont State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
15 36.6 4.8 45.0 18.4 0.502 11.8 25.3 31.7 53.2 64.0 68.6 68.6 68.6

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
15 36.6 4.8 45.0 18.4 0.502 11.8 25.3 31.7 53.2 64.0 68.6 68.6 68.6

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

Vermont Normal Percentiles
Vermont Lognormal Percentiles

About These Charts:

These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Virginia State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
66 29.0 2.1 32.5 17.0 0.587 9.8 17.0 25.0 35.2 51.9 56.8 87.3 87.3

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
64 27.2 1.8 30.2 14.0 0.515 9.8 16.9 24.2 34.6 47.5 53.3 75.3 75.3

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date

Charts

Virginia Normal Percentiles
Virginia Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Washington State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
109 48.9 22.8 86.7 238.2 4.874 6.1 12.1 15.5 22.2 42.1 84.1 513.0 2450.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
108 26.6 5.2 35.2 53.8 2.019 6.1 12.0 15.5 22.1 40.6 63.3 219.0 513.0

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date

Charts

Washington Normal Percentiles
Washington Lognormal Percentiles

About These Charts:

These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

West Virginia State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
39 31.4 1.6 34.1 10.1 0.321 14.1 27.6 31.3 36.5 42.2 53.5 61.2 61.2

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
39 31.4 1.6 34.1 10.1 0.321 14.1 27.6 31.3 36.5 42.2 53.5 61.2 61.2

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date

Charts

West Virginia Normal Percentiles
West Virginia Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Wisconsin State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
88 19.3 1.8 22.4 17.0 0.879 3.9 12.5 16.4 21.7 27.4 34.2 154.0 154.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
87 17.8 1.0 19.4 8.9 0.501 3.9 12.3 16.4 21.7 26.1 30.1 67.2 67.2

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

Wisconsin Normal Percentiles
Wisconsin Lognormal Percentiles

About These Charts:

These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

 
 

Wyoming State Data
 

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
161 18.9 0.4 19.6 5.1 0.269 4.3 15.7 18.1 20.7 25.0 28.8 38.0 38.6

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
158 18.5 0.4 19.1 4.4 0.240 4.3 15.6 18.0 20.4 23.9 26.5 33.1 33.5

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Charts

Wyoming Normal Percentiles
Wyoming Lognormal Percentiles

About These Charts:

These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Superfund

  • Learn About Superfund
    • What is Superfund?
    • Site Search
    • Cleanup Process
    • Superfund History
    • Success Stories
    • Superfund: CERCLA Overview
  • Community Involvement
    • Technical Assistance for Communities
    • Community Involvement Tools and Resources
    • Community Advisory Groups (CAGs)
    • Citizen Excellence in Community Involvement Award
    • Training and Professional Development
    • EPA Regional Superfund Community Involvement Contacts
  • Cleanup Support
    • Training and Learning Center
    • Superfund Climate Resilience
    • Superfund Green Remediation
    • Superfund Cleanup Optimization
    • Natural Resource Damages
    • Superfund Remedial Program in Indian Country
  • Accomplishments & Benefits
    • Benefits to Communities
    • Accomplishments
    • Performance Measures
    • Human Exposure Dashboard
  • Cleaning up Sites
    • Superfund Site Assessment
    • National Priorities List
    • Remedial Investigation/Feasibility Study
    • Remedy Decisions
    • Remedial Design / Remedial Action
    • Post Construction Completion
    • National Priorities List Deletion
    • Superfund Site Reuse/Redevelopment
  • Contaminants at Superfund Sites
    • Asbestos
    • Dioxin
      • Risk Assessment for Dioxin at Superfund Sites
    • Lead
    • Radiation
    • Soil Bioavailability
  • Contaminated Media at Superfund Sites
    • Abandoned Mine Lands
    • Contaminated Sediments
    • Groundwater
    • Soil Screening Guidance
  • Policy, Reports & Other Documents
    • Policy, Guidance, Laws
    • Superfund Data and Reports
    • Find Superfund Documents
    • Superfund Glossary
Contact Us About Superfund
Contact Us About Superfund to ask a question, provide feedback, or report a problem.
Last updated on October 8, 2024
  • Assistance
  • Spanish
  • Arabic
  • Chinese (simplified)
  • Chinese (traditional)
  • French
  • Haitian Creole
  • Korean
  • Portuguese
  • Russian
  • Tagalog
  • Vietnamese
United States Environmental Protection Agency

Discover.

  • Accessibility Statement
  • Budget & Performance
  • Contracting
  • EPA www Web Snapshot
  • Grants
  • No FEAR Act Data
  • Plain Writing
  • Privacy
  • Privacy and Security Notice

Connect.

  • Data
  • Inspector General
  • Jobs
  • Newsroom
  • Regulations.gov
  • Subscribe
  • USA.gov
  • White House

Ask.

  • Contact EPA
  • EPA Disclaimers
  • Hotlines
  • FOIA Requests
  • Frequent Questions
  • Site Feedback

Follow.