Pennsylvania Water Discharge Data — Searchable and Tracked

Facilities across Pennsylvania report what they discharge into rivers, streams, and waterways under NPDES (National Pollutant Discharge Elimination System) permits. We make those public records searchable and show when reported values exceed permit limits — known as exceedances. Subscribe to email digests for specific facilities, counties, or parameters.

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2,495

Permits Tracked

Counties in Dataset

42,343

Limit Exceedances

128

Parameters Monitored

Data covers monitoring periods from January 2021 through May 2026.

Data Disclaimer: Permit Minder reformats publicly available PA DEP (Pennsylvania Department of Environmental Protection) eDMR (Electronic Discharge Monitoring Report) data. This data is self-reported by permitted facilities to PA DEP. The appearance of a record does not indicate any regulatory determination. Exceedance data reflects reported values compared to permit limits on file and does not reflect whether any exceedance involved a permitted upset or bypass under 40 CFR 122.41(n)/(m), a variance, consent order, or approved compliance schedule. Permit Minder is independently operated and is not affiliated with EPA, PA DEP, or any government agency. If you believe any record is inaccurate, please submit a data correction request.

How It Works

Facilities with NPDES permits in Pennsylvania are required to self-report discharge monitoring data to PA DEP. When a reported value exceeds the numeric limit in a facility's permit, that's an exceedance. Permit Minder compiles these public records into a searchable database so anyone can find exceedances without digging through state reporting systems.

Search

Find any NPDES-permitted facility in Pennsylvania by name, permit number, county, or discharge parameter.

Review

See reported discharge values alongside permit limits, with percentage-over-limit calculations for each monitoring period.

Monitor

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