Clean Water Act discharge permit · NPDES SC0025933
CITY OF JOHNSONVILLE / EAST WWTP, Johnsonville, SC: NPDES SC0025933 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 12Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
CITY OF JOHNSONVILLE / EAST WWTP, held by JOHNSONVILLE CITY OF, holds NPDES permit SC0025933. EPA’s file records it issued October 30, 2017 and expiring November 30, 2022. 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 | CITY OF JOHNSONVILLE / EAST WWTP |
|---|---|
| Permittee as filed | JOHNSONVILLE CITY OF |
| NPDES ID | SC0025933 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | October 30, 2017 |
| Expiration date | November 30, 2022 |
| Issuing agency | State |
| Address | Johnsonville, SC 29555 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Outlet Lynches River (HUC 030402020705) |
| 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
- 13Pollutants on file
- 12Under a numeric limit
- 13With a violation of any kind
- 7With 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 |
|---|---|---|---|---|---|
| BOD, 5-day, percent removal | 1 | 15 | 15 | February 28, 2018 | 99,999% over the limit |
| Solids, suspended percent removal | 1 | 13 | 12 | September 30, 2016 | 69% over the limit |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 5 | 5 | October 31, 2017 | 116% over the limit |
| Chlorine, total residual | 4 | 4 | 2 | December 31, 2011 | 2,530% over the limit |
| BOD, 5-day, 20 deg. C | 4 | 5 | 1 | March 31, 2017 | 140% over the limit |
| Oxygen, dissolved [DO] | 1 | 2 | 1 | May 31, 2011 | 5% over the limit |
| E. coli | 4 | 1 | 1 | April 30, 2018 | 99,999% over the limit |
| Nitrogen, ammonia total [as N] | 16 | 4 | 0 | ||
| Solids, total suspended | 4 | 4 | 0 | ||
| Oxygen demand, ultimate | 8 | 2 | 0 | ||
| pH | 2 | 2 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 2 | 0 | ||
| Coliform, fecal general | 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
- 5Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 30, 2026 | Permit Violations - Unapproved Operation | ST6 |
| October 6, 2020 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
| August 13, 2020 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
| April 13, 2020 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
| August 19, 2019 | Management Practice Violations - Failure to Maintain Records | 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 SC0025933 there.
Nearby on the register
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- Every permit record in Johnsonville, 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.