Clean Water Act discharge permit · NPDES SC0030783
MCCORMICK ROCKY CREEK WWTF, Mccormick, SC: NPDES SC0030783 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 14Pollutants under a numeric limit
- 9Pollutants with an effluent exceedance
MCCORMICK ROCKY CREEK WWTF, held by MCCORMICK COMMISSION OF PUBLIC WORKS, holds NPDES permit SC0030783. EPA’s file records it issued August 22, 2019 and expiring January 31, 2024. 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 | MCCORMICK ROCKY CREEK WWTF |
|---|---|
| Permittee as filed | MCCORMICK COMMISSION OF PUBLIC WORKS |
| NPDES ID | SC0030783 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | August 22, 2019 |
| Expiration date | January 31, 2024 |
| Issuing agency | State |
| Address | Mccormick, SC 29835 |
| Subwatershed | Rocky Creek-Cuffytown Creek (HUC 030601070107) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 18Pollutants on file
- 14Under a numeric limit
- 17With 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 |
|---|---|---|---|---|---|
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 16 | 12 | January 31, 2022 | 128% over the limit |
| Chlorine, total residual | 8 | 8 | 6 | December 31, 2004 | 809% over the limit |
| Nitrogen, ammonia total [as N] | 16 | 9 | 5 | August 31, 2012 | 492% over the limit |
| Copper, total [as Cu] | 0 | 6 | 4 | June 30, 2009 | 56,959% over the limit |
| BOD, 5-day, 20 deg. C | 8 | 6 | 2 | August 31, 2012 | 80% over the limit |
| Solids, total suspended | 8 | 5 | 1 | November 30, 2011 | 263% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 3 | 1 | June 30, 2005 | 102% over the limit |
| BOD, 5-day, percent removal | 2 | 2 | 1 | July 31, 2004 | 501% over the limit |
| Solids, suspended percent removal | 2 | 2 | 1 | August 31, 2019 | 502% over the limit |
| Nitrogen, total [as N] | 8 | 12 | 0 | ||
| Phosphorus, total [as P] | 8 | 12 | 0 | ||
| pH | 4 | 2 | 0 | ||
| Coliform, fecal general | 0 | 2 | 0 | ||
| %Mortality 7Day Chronic Ceriodaphnia dubia | 0 | 2 | 0 | ||
| %Repro Reduc Static Renewal7D Chronic Ceriodaphnia dubia | 0 | 2 | 0 | ||
| Oxygen demand, ultimate | 2 | 1 | 0 | ||
| Oxygen, dissolved [DO] | 2 | 1 | 0 | ||
| E. coli | 8 | 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
- 3Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| June 4, 2021 | Management Practice Violations - Laboratory Not Certified | ST6 |
| June 4, 2021 | Permit Violations - Violation Specified in Comment | ST6 |
| June 3, 2021 | 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 SC0030783 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 September 15, 2026.