Clean Water Act discharge permit · NPDES SC0024783
NCSD FELIX C DAVIS WWTP, N Charleston, SC: NPDES SC0024783 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 0Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
NCSD FELIX C DAVIS WWTP, held by NORTH CHARLESTON SEWER DISTRICT, holds NPDES permit SC0024783. EPA’s file records it issued February 8, 2022 and expiring August 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 | NCSD FELIX C DAVIS WWTP |
|---|---|
| Permittee as filed | NORTH CHARLESTON SEWER DISTRICT |
| NPDES ID | SC0024783 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | February 8, 2022 |
| Expiration date | August 31, 2024 |
| Issuing agency | State |
| Address | N Charleston, SC 29405 |
| Subwatershed | Lower Cooper River (HUC 030502010707) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 10Pollutants on file
- 0Under a numeric limit
- 10With 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 |
|---|---|---|---|---|---|
| Enterococci | 0 | 7 | 7 | May 31, 2025 | 99,999% over the limit |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 3 | 1 | April 30, 2012 | 55% over the limit |
| pH | 0 | 1 | 1 | April 30, 2005 | |
| Solids, total suspended | 0 | 1 | 1 | September 30, 2006 | 31% over the limit |
| Nitrogen, ammonia total [as N] | 0 | 1 | 1 | March 31, 2009 | 99,999% over the limit |
| Coliform, fecal general | 0 | 1 | 1 | October 31, 2011 | 25% over the limit |
| Solids, suspended percent removal | 0 | 1 | 1 | October 31, 2017 | 13% over the limit |
| Oxygen, dissolved [DO] | 0 | 47 | 0 | ||
| Nitrogen, total [as N] | 0 | 2 | 0 | ||
| Phosphorus, total [as P] | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| February 15, 2023 | Pretreatment - Failure to Meet Inspection and Sampling Plan for SIUs | 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.
Watch this permit
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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 SC0024783 there.
Nearby on the register
- Discharge permits in N Charleston
- Every permit record in N Charleston, 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 September 15, 2026.