Clean Water Act discharge permit · NPDES SC0041670
ADNAH HILLS MHP WWTP, Rock Hill, SC: NPDES SC0041670 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 10Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
ADNAH HILLS MHP WWTP holds NPDES permit SC0041670, which discharges to Tools Frk Crk-Wildcat Creek. EPA’s file records it issued April 4, 2011 and expiring December 31, 2014. 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 | ADNAH HILLS MHP WWTP |
|---|---|
| Permittee as filed | ADNAH HILLS MHP WWTP |
| NPDES ID | SC0041670 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | April 4, 2011 |
| Expiration date | December 31, 2014 |
| Address | Rock Hill, SC 29732 |
| Receiving water | TOOLS FRK CRK-WILDCAT CREEK |
| Subwatershed | Tools Fork (HUC 030501030401) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 15Pollutants on file
- 10Under a numeric limit
- 15With a violation of any kind
- 5With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 16 | 24 | 8 | November 30, 2025 | 490% over the limit |
| Oxygen, dissolved [DO] | 2 | 8 | 4 | September 30, 2006 | 13% over the limit |
| BOD, 5-day, 20 deg. C | 8 | 19 | 3 | November 30, 2025 | 40% over the limit |
| E. coli | 0 | 10 | 2 | October 31, 2025 | 593% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 9 | 1 | February 28, 2007 | 335% over the limit |
| Solids, total suspended | 8 | 16 | 0 | ||
| Phosphorus, total [as P] | 8 | 16 | 0 | ||
| Copper, total [as Cu] | 8 | 14 | 0 | ||
| Chlorine, total residual | 8 | 14 | 0 | ||
| Nitrogen, total [as N] | 0 | 12 | 0 | ||
| pH | 4 | 8 | 0 | ||
| Coliform, fecal general | 4 | 2 | 0 | ||
| Cadmium, total [as Cd] | 0 | 2 | 0 | ||
| Lead, total [as Pb] | 0 | 2 | 0 | ||
| Zinc, total [as Zn] | 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 |
|---|---|---|
| August 10, 2023 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| August 9, 2023 | Permit Violations - Violation Specified in Comment | ST6 |
| September 30, 2020 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| September 30, 2020 | Permit Violations - Violation Specified in Comment | ST6 |
| March 21, 2017 | Management Practice Violations - Best Management Practice Deficiencies | 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 SC0041670 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.