Science & Technology

Comments on EPA Evaluations of Trading and Offset Programs in the Chesapeake Bay Watershed from Interested Stakeholders

This page provides all of the comments made by EPA partners and stakeholders on the EPA assessments of Trading and Offset Programs in the Bay states and District of Columbia.

EPA Evaluations of Phase I Watershed Implementation Plans in the Chesapeake Bay Watershed

This page provides the PDF documents of EPA's evaluation of the Phase I WIPs submitted by the jurisdictions (Delaware, District of Columbia, Maryland, New York, Pennsylvania, Virginia and West Virginia).

EPA Evaluation of Final 2012-2013 Milestone Commitments and Phase II WIPs in the Chesapeake Bay Watershed

This page provides the final evaluation of the 2012-2013 milestone commitments and the evaluation of the Phase II Watershed Implementation Plans for the Chesapeake Bay TMDL.

Final EPA Evaluation of 2012-2013 Milestone Progress and 2014-2015 Milestone Commitments in the Chesapeake Bay Watershed

This page provides PDFs of the final EPA evaluation of 2012-2013 milestone progress and 2014-2015 milestone commitments.

Opportunities for CMAQ Collaborators

Opportunities for students and postdoctoral fellows to work with the CMAQ team are available.

Advancing Environmental Safety: Celebrating 20 years of Nanotechnology Research at EPA

EPA develops science and processes to evaluate the human health and ecological safety of products containing nanomaterials to estimate their potential environmental impact.

EPA announces $48 million for southeastern states to repair water systems impacted by Hurricane Helene

Release Date: September 30, 2025

Real Time Geospatial (RETIGO) Frequent Questions

Real Time Geospatial Data Viewer (RETIGO) FAQ on formats, exporting, etc.

What Waters are Included in the National Aquatic Resource Surveys?

Each of the National Aquatic Resource Surveys (NARS) focuses on a specific water resource type - coastal, lakes, rivers & streams and wetlands.

National Rivers and Streams Assessment 2008-2009 Technical Report

PDF of the NRSA 2008-2009 technical report

National Rivers and Streams Assessment 2013-2014 Technical Support Document

PDF of the NRSA 2013-2014 technical support document

National Wetland Condition Assessment 2021 Site Evaluation Guidelines

2014 NATA State Summary Files

Downloadable data files for the 2014 NATA;

2014 NATA: Emissions Update Document

A one-page document providing emission update and errata information associated with the 2014 NATA assessment

EPA Updates Its Safer Chemical Ingredients List, Adds 27 Chemicals

On September 30, 2024, EPA updated its Safer Chemical Ingredients List (SCIL).

Winning Over the Heart: EPAer Recognized for Investigating Links Between Air Pollution and Heart Disease

EPA researcher Dr. Wayne Cascio studies of the health effects of environmental pollutants to inform risk assessment, risk management decisions, and improvement of public health and quality of life. Last week, Dr. Cascio received the Homer N. Calver Award.

See a Bloom, Give it Room! Celebrating Lake Month with EPA’s Harmful Algal Blooms Research

EPA's Science Matters Story for 2024 Lake Appreciation Month. The story is about HABs research at EPA and a monitoring project from 2023.

Advancing Anthrax Response Capabilities

EPA researchers developed an open-access protocol for anthrax detection and informing response activities.

Protecting Pollinators

EPA researchers are developing methods, tools, and models to better understand the effects of pesticides on bees.

Celebrate Women's History Month with EPA

March is Women's History Month, and in celebration, here are a few amazing women who help EPA achieve its mission to protect human health and the environment. Learn more about their work and read their advice for anyone interested in a career in science.