Clean Water Act discharge permit · NPDES SC0021733
GSW&SA CONWAY WWTP, Conway, SC: NPDES SC0021733 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 16Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
GSW&SA CONWAY WWTP, held by Grand Strand Water & Sewer Authority, holds NPDES permit SC0021733. EPA’s file records it issued January 11, 2013 and expiring February 28, 2018. 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 | GSW&SA CONWAY WWTP |
|---|---|
| Permittee as filed | Grand Strand Water & Sewer Authority |
| NPDES ID | SC0021733 |
| 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 11, 2013 |
| Expiration date | February 28, 2018 |
| Issuing agency | State |
| Address | Conway, SC 29526 |
| Subwatershed | Halfway Swamp-Waccamaw River (HUC 030402060905) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 16Pollutants on file
- 16Under a numeric limit
- 6With a violation of any kind
- 4With 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 |
|---|---|---|---|---|---|
| Coliform, fecal general | 4 | 3 | 3 | March 31, 2022 | 948% over the limit |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 3 | 3 | September 30, 2018 | 43% over the limit |
| Oxygen, dissolved [DO] | 2 | 2 | 1 | October 31, 2016 | 22% over the limit |
| Oxygen demand, ultimate | 4 | 1 | 1 | February 28, 2026 | 18% over the limit |
| Nitrogen, total [as N] | 8 | 26 | 0 | ||
| pH | 4 | 1 | 0 | ||
| Solids, total suspended | 8 | 0 | 0 | ||
| Nitrogen, ammonia total [as N] | 8 | 0 | 0 | ||
| Phosphorus, total [as P] | 8 | 0 | 0 | ||
| Cyanide, total [as CN] | 8 | 0 | 0 | ||
| Chlorine, total residual | 8 | 0 | 0 | ||
| Mercury, total [as Hg] | 8 | 0 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 8 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 0 | 0 | ||
| Solids, suspended percent removal | 2 | 0 | 0 | ||
| Carbonaceous oxygen demand, % removal | 2 | 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 |
|---|---|---|
| September 27, 2023 | Permit Violations - Violation Specified in Comment | ST6 |
| February 25, 2021 | Effluent Violations - Numeric effluent violation | ST6 |
| August 12, 2020 | Effluent Violations - Numeric effluent violation | ST6 |
| March 27, 2017 | 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 SC0021733 there.
Nearby on the register
- Discharge permits in Conway
- Every permit record in Conway, 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.