Data and Tools
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Air Modeling - Meteorological Guidance
Meteorological guidance for the use of observational data in permit modeling, monitoring for modeling applications, and other related data procedures and quality assurance
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AERMOD Modeling System Development
AERMOD Model System development plans and ongoing research, which is summarized in a series of White Papers.
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Nitrogen Dioxide/Nitrogen Oxide In-Stack Ratio (ISR) Database
The EPA’s Guideline on Air Quality Models, Appendix W to 40 CFR Part 51, recommends a three-tiered screening approach to estimate ambient concentrations of Nitrogen Dioxide (NO2).
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Air Modeling - Observational Meteorological Data
Observed meteorological data for use in air quality modeling consist of physical parameters that are measured directly by instrumentation, and include temperature, dew point, wind direction, wind speed, cloud cover, cloud layer(s), ceiling height,
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Air Quality Model Clearinghouse
The Model Clearinghouse is a focal point for interpretation of modeling guidance in specific regulatory applications.
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Chemical Mass Balance (CMB) Model
The EPA-CMB Version 8.2 uses source profiles and speciated ambient data to quantify source contributions. Contributions are quantified from chemically distinct source-types rather than from individual emitters.
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Download COBRA
Download the COBRA (Co-Benefits Risk Assessment) screening tool to explore the health and economic benefits of policies that affect air pollution.
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Power Resilience Guide for Water and Wastewater Utilities
This guide helps utilities become more resilient to power outages.
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Safe Drinking Water Information System (SDWIS) Federal Reporting Services
Use the Safe Drinking Water Information System (SDWIS) Federal Reporting Services to query the SDWIS Fed Data Warehouse via report filters and various reporting options
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Operations & Maintenance Checklist & Tasks
Suggested Checklist for Public Water Supply System Operation & Maintenance Manual
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Summary of the World Health Organization's Water Reuse Guideline or Regulation for Potable Water Reuse
World Health Organization (Federal Regulation) | Source water: Treated municipal wastewater | End use: Potable Water Reuse
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Summary of Singapore's Water Reuse Guideline or Regulation for Industry
Singapore (Federal Regulation) | Source water: Treated municipal wastewater | End use: Water reuse for industry
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Summary of Singapore's Water Reuse Guideline or Regulation for Potable Water Reuse
Singapore (Federal Regulation) | Source water: Treated municipal wastewater | End use: Potable Water Reuse
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Data & Data Products: Reporting to TRI: Basic Requirements Widget
Information about and embed code for EPA's Reporting to TRI: Basic Requirements Widget
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Data & Data Products: Smoke Sense Research Project and App Widget
Information about and embed code for EPA's Smoke Sense Research Project and App Widget
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Data & Data Products: Terminology Services Widget
Information about and embed code for EPA's Terminology Services Widget
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LaPlace, Louisiana - Health Information
Map of air monitoring locations for chloroprene in LaPlace, Louisiana
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Air Quality and Climate - CMAQ
Climate
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Human Exposure Assessment and Modeling - Criteria Air Pollutant Exposure Assessment
Summaries of exposure assessments performed for criteria air pollutants in the context of NAAQS reviews.
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Exceptional Events Documents Particulate Matter - Kennewick, WA
Exceptional Events Documents Ozone - Kennewick, WA