EPA Wastewater Treatment Facility Registry with NPDES Linkage

EPA's Facility Registry Service identifies and geospatially locates wastewater treatment plants linked to the National Pollutant Discharge Elimination System. This dataset is a subset of FRS integrated facilities, created by the U.S. Environmental Protection Agency. The data is restricted to internal EPA use and was last updated in April 2026.

Use Cases

• Mapping the geographic location of NPDES-permitted wastewater treatment facilities for spatial analysis.
• Linking facility identification data from FRS to NPDES permit and compliance records in ICIS.
• Analyzing the distribution of regulated discharge points across states and territories like Alabama, Alaska, and American Samoa.

Strengths

• Data is integrated from EPA's national program systems and state/tribal records using verification procedures.
• Provides a centrally managed source for facility identification under the Clean Water Act's NPDES program.
• Cross-platform presence on Data.gov indicates its importance as a reference dataset.

Limitations

• Key metadata such as row count, specific columns, and exact license are not provided by any source.
• Data is classified as sensitive and restricted to the EPA intranet, preventing public access.
• Sources show a minor conflict in the exact 'last updated' timestamp (April 6 vs. April 7, 2026).

Provenance

Source

U.S. Environmental Protection Agency, Facility Registry System (FRS) and Integrated Compliance Information System (ICIS-NPDES).

Collection Method

Integrated from EPA's national program systems, other federal agencies, and State and tribal master facility records.

Freshness

2026-04-07 18:10:06.946085

Geography

United States, including states, territories (e.g., American Samoa), and the District of Columbia.