Clean Water Act discharge permit · NPDES PA0025950
MONONGAHELA CITY STP, Monongahela, PA: NPDES PA0025950 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 6Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
MONONGAHELA CITY STP, held by MONONGAHELA CITY MUN AUTH, holds NPDES permit PA0025950, which discharges to Monongahela River. EPA’s file records it issued July 10, 2002 and expiring July 10, 2007. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | MONONGAHELA CITY STP |
|---|---|
| Permittee as filed | MONONGAHELA CITY MUN AUTH |
| NPDES ID | PA0025950 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | July 10, 2002 |
| Expiration date | July 10, 2007 |
| Address | Monongahela, PA 15063 |
| Receiving water | MONONGAHELA RIVER |
| Subwatershed | Pigeon Creek (HUC 050200050804) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 12Pollutants on file
- 6Under a numeric limit
- 12With a violation of any kind
- 6With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Solids, total suspended | 4 | 104 | 82 | November 30, 2023 | 463% over the limit |
| Coliform, fecal general | 2 | 58 | 44 | March 31, 2026 | 99,999% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 4 | 45 | 25 | April 30, 2024 | 1,124% over the limit |
| Chlorine, total residual | 4 | 20 | 16 | February 28, 2022 | 530% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 13 | 8 | February 29, 2000 | 31% over the limit |
| pH | 2 | 10 | 6 | April 30, 2026 | |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 0 | 8 | 0 | ||
| BOD, 5-day, 20 deg. C | 0 | 6 | 0 | ||
| Nitrogen, ammonia total [as N] | 0 | 6 | 0 | ||
| Oxygen, dissolved [DO] | 0 | 2 | 0 | ||
| Nitrogen, total [as N] | 0 | 2 | 0 | ||
| Phosphorus, total [as P] | 0 | 2 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 9Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| June 23, 2026 | Failure to minimize or prevent an unanticipated prohibited bypass to waters of the U.S. | ST6 |
| June 23, 2026 | Effluent Violations - Numeric effluent violation | ST6 |
| October 26, 2023 | Effluent Violations - Numeric effluent violation | ST6 |
| October 26, 2023 | Failure to minimize or prevent an unanticipated prohibited bypass to waters of the U.S. | ST6 |
| July 2, 2021 | Effluent Violations - Numeric effluent violation | ST6 |
| February 24, 2021 | Monitoring Violations - Frequency of Sampling Violation | ST6 |
| February 24, 2021 | Effluent Violations - Unapproved Bypass | ST6 |
| February 24, 2021 | Effluent Violations - Numeric effluent violation | ST6 |
| October 10, 2019 | Effluent Violations - Numeric effluent violation | ST6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID PA0025950 there.
Nearby on the register
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- Every permit record in Pennsylvania, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.