Clean Water Act discharge permit · NPDES PA0209511
MAINESBURG STP/COLLECTION SYSTEM, Mainesburg, PA: NPDES PA0209511 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 10Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
MAINESBURG STP/COLLECTION SYSTEM, held by SULLIVAN TWP TIOGA CNTY, holds NPDES permit PA0209511, which discharges to Corey Creek. EPA’s file records it issued February 25, 2025 and expiring February 28, 2030. 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 | MAINESBURG STP/COLLECTION SYSTEM |
|---|---|
| Permittee as filed | SULLIVAN TWP TIOGA CNTY |
| NPDES ID | PA0209511 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | February 25, 2025 |
| Expiration date | February 28, 2030 |
| Issuing agency | State Environmental Organization |
| Address | Mainesburg, PA 16932 |
| Receiving water | Corey Creek |
| Subwatershed | Corey Creek (HUC 020501040906) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 10Pollutants on file
- 10Under a numeric limit
- 9With a violation of any kind
- 4With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 4 | 45 | 37 | May 31, 2026 | 869% over the limit |
| Coliform, fecal general | 4 | 22 | 14 | May 31, 2026 | 99,999% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 4 | 20 | 4 | February 28, 2026 | 77% over the limit |
| Solids, total suspended | 7 | 29 | 1 | January 31, 2026 | 5% over the limit |
| BOD, 5-day, 20 deg. C | 3 | 12 | 0 | ||
| pH | 2 | 8 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 8 | 0 | ||
| Chlorine, total residual | 2 | 8 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 4 | 0 | ||
| E. coli | 1 | 0 | 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
- 17Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| March 31, 2026 | Effluent Violations - Numeric effluent violation | ST6 |
| March 31, 2026 | Reporting Violations - Failure to Submit DMRs | ST6 |
| April 9, 2025 | Effluent Violations - Numeric effluent violation | ST6 |
| October 31, 2024 | Effluent Violations - Numeric effluent violation | ST6 |
| November 8, 2023 | Effluent Violations - Numeric effluent violation | ST6 |
| July 19, 2023 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| March 16, 2023 | Effluent Violations - Numeric effluent violation | ST6 |
| May 2, 2022 | Effluent Violations - Numeric effluent violation | ST6 |
| February 2, 2022 | Effluent Violations - Numeric effluent violation | ST6 |
| March 31, 2021 | Effluent Violations - Numeric effluent violation | ST6 |
| August 13, 2020 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| August 13, 2020 | Effluent Violations - Numeric effluent violation | ST6 |
| August 13, 2020 | Reporting Violations - Failure to Submit DMRs | ST6 |
| March 24, 2020 | Effluent Violations - Numeric effluent violation | ST6 |
| January 15, 2020 | Effluent Violations - Numeric effluent violation | ST6 |
| April 9, 2019 | Effluent Violations - Numeric effluent violation | ST6 |
| January 23, 2018 | 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.
Watch this permit
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, PA0209511.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
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 PA0209511 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.