Clean Water Act discharge permit · NPDES SC0046621
RICHLAND CO BROAD RIVER WWTF, Irmo, SC: NPDES SC0046621 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 13Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
RICHLAND CO BROAD RIVER WWTF, held by RICHLAND COUNTY UTILITIES & SERVICES, holds NPDES permit SC0046621. EPA’s file records it issued August 24, 2018 and expiring March 31, 2023. 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 | RICHLAND CO BROAD RIVER WWTF |
|---|---|
| Permittee as filed | RICHLAND COUNTY UTILITIES & SERVICES |
| NPDES ID | SC0046621 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | August 24, 2018 |
| Expiration date | March 31, 2023 |
| Issuing agency | State |
| Address | Irmo, SC 29063 |
| 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
- 18Pollutants on file
- 13Under a numeric limit
- 18With 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 |
|---|---|---|---|---|---|
| Phosphorus, total [as P] | 4 | 35 | 27 | November 30, 2025 | 335% over the limit |
| Coliform, fecal general | 0 | 28 | 24 | March 31, 2018 | 99,999% over the limit |
| Solids, total suspended | 4 | 27 | 19 | November 30, 2025 | 338% over the limit |
| E. coli | 4 | 25 | 15 | March 31, 2026 | 99,999% over the limit |
| BOD, 5-day, 20 deg. C | 4 | 18 | 10 | January 31, 2023 | 190% over the limit |
| BOD, 5-day, percent removal | 1 | 111 | 5 | February 28, 2009 | 28% over the limit |
| Solids, suspended percent removal | 1 | 23 | 1 | January 31, 2024 | 13% over the limit |
| Chlorine, total residual | 4 | 32 | 0 | ||
| Oxygen demand, ultimate | 0 | 16 | 0 | ||
| Nitrogen, ammonia total [as N] | 8 | 12 | 0 | ||
| Nitrogen, total [as N] | 4 | 10 | 0 | ||
| pH | 2 | 6 | 0 | ||
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 6 | 0 | ||
| %Mortality 7Day Chronic Ceriodaphnia dubia | 0 | 6 | 0 | ||
| %Repro Reduc Static Renewal7D Chronic Ceriodaphnia dubia | 0 | 6 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 4 | 0 | ||
| Pass/Fail Static 48Hr Acute Ceriodaphnia dubia | 0 | 3 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 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
- 18Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| August 18, 2026 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| August 5, 2026 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| July 27, 2026 | Permit Violations - Violation Specified in Comment | ST6 |
| August 27, 2024 | Permit Violations - Violation Specified in Comment | ST6 |
| August 15, 2022 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| June 9, 2022 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| June 9, 2022 | Monitoring Violations - Invalid/Unrepresentative Sample | ST6 |
| June 9, 2022 | Permit Violations - Violation Specified in Comment | ST6 |
| March 4, 2019 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| March 4, 2019 | Management Practice Violations - Inflow/Infiltration (I/I) | ST6 |
| February 12, 2018 | Management Practice Violations - Failure to Conduct Inspections | ST6 |
| February 12, 2018 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| February 12, 2018 | Management Practice Violations - Inflow/Infiltration (I/I) | ST6 |
| February 12, 2018 | Management Practice Violations - Violation of a milestone in an order | ST6 |
| February 12, 2018 | Management Practice Violations - Failure to Maintain Records | ST6 |
| February 12, 2018 | Monitoring Violations - Invalid/Unrepresentative Sample | ST6 |
| February 12, 2018 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| February 12, 2018 | Effluent Violations - Narrative Effluent Violation | 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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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.