Clean Water Act discharge permit · NPDES SC0025844
DORCHESTER CO UPPER DORCHESTER CO WWTP, St. George, SC: NPDES SC0025844 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 14Pollutants under a numeric limit
- 9Pollutants with an effluent exceedance
DORCHESTER CO UPPER DORCHESTER CO WWTP, held by DORCHESTER COUNTY WATER AND SEWER DEPARTMENT, holds NPDES permit SC0025844, which discharges to Polk Swamp. EPA’s file records it issued January 25, 2016 and expiring February 28, 2021. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | DORCHESTER CO UPPER DORCHESTER CO WWTP |
|---|---|
| Permittee as filed | DORCHESTER COUNTY WATER AND SEWER DEPARTMENT |
| NPDES ID | SC0025844 |
| 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 | January 25, 2016 |
| Expiration date | February 28, 2021 |
| Issuing agency | State |
| Address | St. George, SC 29477 |
| Receiving water | Polk Swamp |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 20Pollutants on file
- 14Under a numeric limit
- 20With 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 |
|---|---|---|---|---|---|
| Flow, in conduit or thru treatment plant | 2 | 41 | 23 | August 31, 2010 | 26% over the limit |
| Chlorine, total residual | 8 | 36 | 16 | July 31, 2007 | 355% over the limit |
| Nitrogen, ammonia total [as N] | 20 | 99 | 7 | January 31, 2013 | 173% over the limit |
| Solids, suspended percent removal | 1 | 23 | 5 | January 31, 2010 | 100% over the limit |
| E. coli | 4 | 6 | 4 | November 30, 2021 | 397% over the limit |
| BOD, 5-day, percent removal | 1 | 21 | 3 | February 28, 2010 | 40% over the limit |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 6 | 2 | March 31, 2022 | 96% over the limit |
| Lead, total [as Pb] | 0 | 3 | 2 | September 30, 2007 | 7,306% over the limit |
| BOD, 5-day, 20 deg. C | 8 | 37 | 1 | October 31, 2006 | 47% over the limit |
| Solids, total suspended | 8 | 40 | 0 | ||
| Phosphorus, total [as P] | 4 | 40 | 0 | ||
| pH | 2 | 20 | 0 | ||
| Oxygen demand, ultimate | 2 | 18 | 0 | ||
| Coliform, fecal general | 0 | 18 | 0 | ||
| Mercury, total [as Hg] | 4 | 12 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 10 | 0 | ||
| %Mortality 7Day Chronic Ceriodaphnia dubia | 0 | 4 | 0 | ||
| %Repro Reduc Static Renewal7D Chronic Ceriodaphnia dubia | 0 | 4 | 0 | ||
| Cadmium, total [as Cd] | 0 | 2 | 0 | ||
| Copper, total [as Cu] | 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 |
|---|---|---|
| November 24, 2021 | Permit Violations - Violation Specified in Comment | ST6 |
| July 22, 2020 | Management Practice Violations - Failure to Maintain Records | ST6 |
| July 22, 2020 | Permit Violations - Violation Specified in Comment | ST6 |
| February 6, 2019 | Management Practice Violations - Failure to Maintain Records | ST6 |
| February 6, 2019 | Permit Violations - Violation Specified in Comment | 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 SC0025844 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.