Clean Water Act discharge permit · NPDES SC0046230
GSW&SA CITY OF MARION WWTP, Marion, SC: NPDES SC0046230 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 15Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
GSW&SA CITY OF MARION WWTP, held by GRAND STRAND WATER & SEWER AUTHORITY, holds NPDES permit SC0046230. EPA’s file records it issued August 21, 2019 and expiring May 31, 2024. 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 | GSW&SA CITY OF MARION WWTP |
|---|---|
| Permittee as filed | GRAND STRAND WATER & SEWER AUTHORITY |
| NPDES ID | SC0046230 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | August 21, 2019 |
| Expiration date | May 31, 2024 |
| Issuing agency | State |
| Address | Marion, SC 29571 |
| Subwatershed | Brownsville Creek-Great Pee Dee River (HUC 030402011002) |
| 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
- 15Pollutants on file
- 15Under a numeric limit
- 3With a violation of any kind
- 3With 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, carbonaceous [5 day, 20 C] | 4 | 2 | 2 | May 31, 2011 | 99,999% over the limit |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 2 | 2 | December 31, 2017 | 41% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 1 | 1 | April 30, 2013 | 102% over the limit |
| Nitrogen, ammonia total [as N] | 8 | 0 | 0 | ||
| Oxygen demand, ultimate | 4 | 0 | 0 | ||
| Solids, total suspended | 4 | 0 | 0 | ||
| Nitrogen, total [as N] | 4 | 0 | 0 | ||
| Phosphorus, total [as P] | 4 | 0 | 0 | ||
| Chlorine, total residual | 4 | 0 | 0 | ||
| E. coli | 4 | 0 | 0 | ||
| Mercury, total [as Hg] | 4 | 0 | 0 | ||
| pH | 2 | 0 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 0 | 0 | ||
| Solids, suspended percent removal | 1 | 0 | 0 | ||
| Carbonaceous oxygen demand, % removal | 1 | 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
- 4Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 11, 2022 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| March 15, 2021 | Monitoring Violations - Invalid/Unrepresentative Sample | ST6 |
| October 14, 2020 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
| September 3, 2020 | Monitoring Violations - Improper Analysis or Lab Error | 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
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, SC0046230.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
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 SC0046230 there.
Nearby on the register
- Discharge permits in Marion
- Every permit record in Marion, 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.