Clean Water Act discharge permit · NPDES SC0033553
OJRSA CONEROSS CREEK WWTP, Seneca, SC: NPDES SC0033553 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 16Pollutants under a numeric limit
- 8Pollutants with an effluent exceedance
OJRSA CONEROSS CREEK WWTP, held by OCONEE JOINT REGIONAL SEWER AUTHORITY, holds NPDES permit SC0033553. EPA’s file records it issued November 26, 2019 and expiring July 31, 2024. 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 | OJRSA CONEROSS CREEK WWTP |
|---|---|
| Permittee as filed | OCONEE JOINT REGIONAL SEWER AUTHORITY |
| NPDES ID | SC0033553 |
| 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 | November 26, 2019 |
| Expiration date | July 31, 2024 |
| Issuing agency | State |
| Address | Seneca, SC 29678 |
| Subwatershed | Middle Coneross Creek (HUC 030601010502) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 17Pollutants on file
- 16Under a numeric limit
- 9With a violation of any kind
- 8With 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] | 8 | 5 | 5 | October 31, 2025 | 107% over the limit |
| Phosphorus, total [as P] | 4 | 4 | 4 | July 31, 2025 | 44% over the limit |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 4 | 4 | November 30, 2013 | 104% over the limit |
| BOD, 5-day, 20 deg. C | 4 | 2 | 2 | May 31, 2023 | 89% over the limit |
| E. coli | 4 | 2 | 2 | May 31, 2019 | 25% over the limit |
| Pass/Fail Static 48Hr Acute Ceriodaphnia dubia | 1 | 2 | 2 | April 30, 2025 | |
| pH | 2 | 1 | 1 | August 31, 2010 | |
| Coliform, fecal general | 0 | 1 | 1 | September 30, 2010 | 80% over the limit |
| Copper, total [as Cu] | 4 | 12 | 0 | ||
| Solids, total suspended | 4 | 0 | 0 | ||
| Nitrogen, total [as N] | 4 | 0 | 0 | ||
| Chlorine, total residual | 4 | 0 | 0 | ||
| Oxygen demand, ultimate | 2 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 0 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 0 | 0 | ||
| BOD, 5-day, percent removal | 1 | 0 | 0 | ||
| Solids, suspended percent removal | 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
- 8Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| June 15, 2021 | Permit Violations - Violation Specified in Comment | ST6 |
| May 29, 2020 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| May 29, 2020 | Permit Violations - Violation Specified in Comment | ST6 |
| June 19, 2019 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| June 19, 2019 | Monitoring Violations - Invalid/Unrepresentative Sample | ST6 |
| June 19, 2019 | Permit Violations - Violation Specified in Comment | ST6 |
| June 17, 2019 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| June 17, 2019 | Monitoring Violations - Invalid/Unrepresentative Sample | 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 SC0033553 there.
Nearby on the register
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- Every permit record in Seneca, A to Z
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- Every permit record in South Carolina, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.