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
    • 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
    • Guidance
    • 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. Envirofacts

SDWIS Search for Indian Tribes

SDWIS Banner
SDWIS icon

Safe Drinking Water Search for Indian Tribes

Go back

NOTICE: EPA is aware of inaccuracies and underreporting of some data in the Safe Drinking Water Information System. We are working with the states to improve the quality of the data.

This search allows you to retrieve Safe Drinking Water data from the SDWIS database in Envirofacts.

Ways to Search for Tribal Public Water Systems Using SDWIS

  • Select a geographic area
  • Enter the water system ID number

Geographic Region Search

View water treatment plants associated with Indian Tribes by selecting a corresponding EPA region on the map.

Map of the US, split into EPA regions Navajo Nation

Water System ID Search

Enter a complete nine-character Water System ID number. If the ID number enter is not nine characters, an error message is displayed. Once the ID number is entered, click on the "Search" button to submit the search.


SDWIS Links

  • Overview
  • Search
  • Model
  • Law
  • SDWIS Search User Guide
  • Contact Us
  • Office of Ground Water and Drinking Water Home

System Data Searches

Envirofacts

  • Multisystem Search
  • BR Search
  • GHG Search
  • GHG Query Builder
  • ICIS Search
  • ICIS Air Pollution Search
  • RADNET Radiation Search
  • RadNet Query Builder
  • RCRAInfo Search
  • NEI Search
  • NGGS Search
  • SDWIS Search
  • SEMS Search
  • UV Index Search

Toxic Release Inventory (TRI)

  • TRI Explorer
  • TRI Search
  • Form R Search
  • Form R & A Download
  • EZ Search
  • Customized Search
  • Pollution Prevention

Facility Registry Service (FRS) Query

  • FRS Query
  • FRS Query Builder
  • FRS Organization Query Form

Map of Cleanups in My Community

ECHO

SRS Search

Other Sites of Interest

  • Geospatial Download
  • EnviroMapper
  • MyEnvironment

Envirofacts

  • Multisystem Search
  • Search Tools
  • Maps & Visualizations
  • Data & Developer Services
  • TRI Search
Contact Us About Envirofacts
Contact Us About Envirofacts to ask a question, provide feedback, or report a problem.
Last updated on July 30, 2025
  • 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.