Clean Water Act discharge permit · NPDES SC0021709
GREENWOOD WILSON CREEK WWTF, Greenwood, SC: NPDES SC0021709 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 15Pollutants under a numeric limit
- 9Pollutants with an effluent exceedance
GREENWOOD WILSON CREEK WWTF, held by GREENWOOD/WILSON CREEK WWTF, holds NPDES permit SC0021709, which discharges to Wilson Ck. EPA’s file records it issued August 4, 2014 and expiring August 31, 2019. 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 | GREENWOOD WILSON CREEK WWTF |
|---|---|
| Permittee as filed | GREENWOOD/WILSON CREEK WWTF |
| NPDES ID | SC0021709 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | August 4, 2014 |
| Expiration date | August 31, 2019 |
| Address | Greenwood, SC 29646 |
| Receiving water | WILSON CK |
| Subwatershed | Wilson Creek-Ninety Six Creek (HUC 030501090702) |
| Program components on file | Biosolids, 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
- 21Pollutants on file
- 15Under a numeric limit
- 16With a violation of any kind
- 9With 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 |
|---|---|---|---|---|---|
| Copper, total [as Cu] | 4 | 22 | 22 | April 30, 2012 | 158% over the limit |
| Coliform, fecal general | 0 | 9 | 9 | December 31, 2010 | 99,999% over the limit |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 8 | 6 | June 30, 2026 | 296% over the limit |
| E. coli | 8 | 4 | 4 | January 31, 2026 | 99,999% over the limit |
| IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 4 | 4 | March 31, 2008 | 99,999% over the limit |
| BOD, 5-day, percent removal | 1 | 3 | 3 | July 31, 2019 | 99,999% over the limit |
| Solids, suspended percent removal | 1 | 3 | 3 | July 31, 2019 | 99,999% over the limit |
| Nitrogen, ammonia total [as N] | 8 | 2 | 1 | August 31, 2010 | 41% over the limit |
| Solids, total suspended | 4 | 1 | 1 | January 31, 2018 | 99,999% over the limit |
| Nitrite + Nitrate total [as N] | 0 | 8 | 0 | ||
| Overflows | 0 | 7 | 0 | ||
| Overflow volume [SS0 volume, CSO volume] | 0 | 7 | 0 | ||
| BOD, 5-day, 20 deg. C | 4 | 2 | 0 | ||
| Phosphorus, total [as P] | 4 | 2 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 0 | 2 | 0 | ||
| Pass/Fail Static 48Hr Acute Ceriodaphnia dubia | 1 | 1 | 0 | ||
| Nitrogen, total [as N] | 4 | 0 | 0 | ||
| Chlorine, total residual | 4 | 0 | 0 | ||
| pH | 2 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 0 | 0 | ||
| Oxygen, dissolved [DO] | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| March 28, 2024 | Pretreatment - Failure to Establish Self-Monitoring Requirements | 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 SC0021709 there.
Nearby on the register
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- Every permit record in South Carolina, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.