Science & Technology
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Resources for the San Juan Watershed
Resources for the San Juan Watershed area.
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Six-Year Review of Drinking Water Standards
Learn about EPA's process and outcomes for identifying drinking water standards that may need revision to strengthen public health protection or improve efficiency of implementation.
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EPA Non-Regulatory Health-Based Drinking Water Levels
EPA Non-Regulatory Health-Based Drinking Water Levels - Find information on water contaminants' effects on human health, including advisory tables and documents and benchmarks for pesticides.
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EPA Metadata Technical Specification
Requirements for creating metadata documents.
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State Progress Toward Adopting Numeric Nutrient Water Quality Criteria for Nitrogen and Phosphorus
The progress states are making towards the development of numeric criteria for phosphorus and nitrogen pollution.
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Tutorial: Create a RETIGO File from an Excel Spreadsheet
Real Time Geospatial Data Viewer Allows users to view their mobile monitored air quality data
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CASTNET Site Locations
CASTNET site map
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Climate Change Research
EPA conducts research to understand the environmental and health impacts of climate change and to provide sustainable solutions for adapting to and reducing the impact from a changing climate.
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National Research Programs
EPA's Office of Research and Development supports six research programs that identify the most pressing environmental health research needs with input from EPA offices, partners, and stakeholders.
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News and Features
News and Features
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Estuaries and the National Estuary Program
Provides information about estuaries and the National Estuary Program
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Design Value Interactive Tool
This page displays the Design Value Interactive Tool
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About GCX Resilience
This page is about the METRO tool that is part of the Global Climate Explorer set of tools using an ESRI map to display the data. It was taken offline in 2021 to be released by a newer tool. See the 2017 Final Report for more details on using METRO.
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Summary of Maryland's Water Reuse Guideline or Regulation for Landscaping
Maryland (State Regulation) | Source water: Treated municipal wastewater | End use: Landscaping
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Summary of Texas' Water Reuse Guideline or Regulation for Onsite Non-Potable Water Reuse, Industry, Landscaping, and Agriculture
Texas (State Regulation) | Source water: Onsite collected waters | End use: Onsite non-potable reuse
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Current Law, Regulations and Guidance for State and Local Transportation
This page provides access to all transportation conformity regulations, including final rules and rulemakings currently in progress.
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From the Desk of the Regional Administrator - "EPA Region 7 Celebrates Earth Day 2026"
EPA Region 7’s “From the Desk of the Regional Administrator” newsletter gives residents of Iowa, Kansas, Missouri, and Nebraska a chance to hear from Regional Administrator Jim Macy on EPA’s work in their communities.
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Excess Food Opportunities Map
EPA created the excess Food opportunities mapping tool to help move food and food residuals up the Food Recovery Hierarchy.
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Toxicology Testing in the 21st Century (Tox21)
Tox21 researchers aim to develop better toxicity assessment methods to quickly and efficiently test whether certain chemical compounds have the potential to disrupt processes in the human body that may lead to negative health effects.
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Reports OIG
Audit and Evaluation Reports issued by the Office of General.