Science & Technology

National Water Program Guidance

National Program Guidance description

Water Quality Standards Regulations: Colorado

Water quality standards that are EPA-approved or in effect for Clean Water Act purposes.

Freshwater Harmful Algal Blooms Request for Applications (RFA)

EPA is seeking regular and early career applications proposing innovative research on the prediction, prevention, control and mitigation of freshwater HABs as well as the drivers, life cycle patterns, and fate of and effects from from less-common, less

Report of the Workshop on Selecting Input Distributions for Probabilistic Assessments

The workshop and this report will assist EPA in developing a framework and guidance for selecting input distributions for probabilistic risk assessments.

Notification: Evaluation of the EPA’s Progress in Fulfilling Infrastructure and Investment and Jobs Act Requirements Related to Water and Wastewater System Cybersecurity

EPA OIG Infrastructure Investment and Jobs Act Oversight

The OIG is prepared to maximize the effectiveness of Infrastructure Investment and Jobs Act funds appropriated to the EPA and specifically to the OIG for oversight, ensuring that they are used for their intended purposes.

Water Quality Data

The Water Quality Portal Data Warehouse is a repository for water quality, biological, and physical data and is used by state environmental agencies, EPA and other federal agencies, universities, private citizens, and many others.

Partners in the National Aquatic Resource Surveys

EPA is working with state, tribal, and other federal agencies to implement the National Aquatic Resource Surveys (NARS). States and tribes participate in these surveys through their Clean Water Act Section 106 Monitoring Initiative grants.

Applying the National Aquatic Resource Survey Data

The NARS generate nationally-consistent water quality data across a variety of indicators. States have applied the NARS data to help address local policy questions and to implement changes regarding aquatic resource management.

StreamCat Data Processing and Quality Assurance

Description of steps used to process data and keep up with quality assurance standards when creating the StreamCat dataset.

Methane Emissions from the Oil and Gas Sector

EPA’s Voluntary Methane Programs encourage oil and natural gas companies to adopt cost-effective technologies and practices that improve operational efficiency and reduce emissions of methane, a potent greenhouse gas.

Urban Waters - The Mystic River Watershed

Information on the efforts of the US EPA, the Commonwealth of Massachusetts, the municipalities within the Mystic River Watershed and nongovernmental organizations to improve the water quality of the Mystic River.

Magnificent Ground Water Connection

A compilation of some of the best ground water-related activities from previously existing curricula, seasoned with a collection of original materials and geared specifically to New England.

UST Finder

This page contains a fact sheet about the UST Finder web mapping application

Visual Plumes

Page on Visual Plumes model system, a Windows-based software application for simulating surface water jets and plumes.

Site Screening Report: June Abandoned Uranium Mine

Site Screening Report of June abandoned uranium mine which includes all immediate information associated with the mine site.

GHGRP Refineries

Overview and data highlights of 2023 refineries emissions of greenhouse gases in EPA's Greenhouse Gas Reporting Program.

Site Screening Report: Alta Abandoned Uranium Mine

Site Screening Report of Alta abandoned uranium mine which includes all immediate information associated with the mine site.

Site Screening Report: C-3 Abandoned Uranium Mine

Site Screening Report of C-3 abandoned uranium mine which includes all immediate information associated with the mine site.

GHGRP Underground Coal Mines

Overview and data highlights of 2023 underground coal mines sector emissions of greenhouse gases in EPA's Greenhouse Gas Reporting Program.