Clean Water Act discharge permit · NPDES SC0024147
CAYCE WWTP, Cayce, SC: NPDES SC0024147 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 0Pollutants under a numeric limit
- 10Pollutants with an effluent exceedance
CAYCE WWTP, held by CAYCE CITY OF, holds NPDES permit SC0024147. EPA’s file records it issued December 6, 2021 and expiring May 31, 2023. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | CAYCE WWTP |
|---|---|
| Permittee as filed | CAYCE CITY OF |
| NPDES ID | SC0024147 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | December 6, 2021 |
| Expiration date | May 31, 2023 |
| Issuing agency | State |
| Address | Cayce, SC 29033 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Middle Congaree River (HUC 030501100303) |
| Program components on file | POTW, Pretreatment |
| NAICS | 221320 – Sewage Treatment Facilities |
| SIC | 4952 – Sewerage Systems |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 19Pollutants on file
- 0Under a numeric limit
- 19With a violation of any kind
- 10With 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 |
|---|---|---|---|---|---|
| Coliform, fecal general | 0 | 12 | 10 | December 31, 2015 | 99,999% over the limit |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 8 | 6 | February 28, 2025 | 132% over the limit |
| E. coli | 0 | 5 | 5 | May 31, 2025 | 397% over the limit |
| Solids, total suspended | 0 | 8 | 4 | May 31, 2025 | 56% over the limit |
| Chlorine, total residual | 0 | 7 | 3 | November 30, 2022 | 819% over the limit |
| Oxygen, dissolved [DO] | 0 | 3 | 2 | October 31, 2009 | 14% over the limit |
| pH | 0 | 3 | 1 | November 30, 2004 | |
| Solids, suspended percent removal | 0 | 2 | 1 | December 31, 2004 | 53% over the limit |
| Pass/Fail Static 48Hr Acute Ceriodaphnia dubia | 0 | 2 | 1 | February 28, 2023 | |
| Phosphorus, total [as P] | 0 | 1 | 1 | June 30, 2022 | 25% over the limit |
| BOD, 5-day, 20 deg. C | 0 | 4 | 0 | ||
| Nitrogen, ammonia total [as N] | 0 | 4 | 0 | ||
| Nitrogen, nitrate total [as N] | 0 | 4 | 0 | ||
| Mercury, total [as Hg] | 0 | 4 | 0 | ||
| Oxygen demand, ultimate | 0 | 2 | 0 | ||
| Flow, in conduit or thru treatment plant | 0 | 2 | 0 | ||
| %Mortality 7Day Chronic Ceriodaphnia dubia | 0 | 2 | 0 | ||
| %Repro Reduc Static Renewal7D Chronic Ceriodaphnia dubia | 0 | 2 | 0 | ||
| BOD, 5-day, percent removal | 0 | 1 | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| October 19, 2023 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| February 18, 2021 | Pretreatment - Failure to submit required report (non-DMR) | 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 SC0024147 there.
Nearby on the register
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- Every permit record in Cayce, A to Z
- Discharge permits in South Carolina
- Every permit record in South Carolina, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.