Clean Water Act discharge permit · NPDES SC0027707
SUMTER POCOTALIGO RIVER PLANT, Sumter, SC: NPDES SC0027707 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 16Pollutants under a numeric limit
- 8Pollutants with an effluent exceedance
SUMTER POCOTALIGO RIVER PLANT, held by SUMTER CITY OF, holds NPDES permit SC0027707. EPA’s file records it issued February 11, 2015 and expiring May 31, 2018. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | SUMTER POCOTALIGO RIVER PLANT |
|---|---|
| Permittee as filed | SUMTER CITY OF |
| NPDES ID | SC0027707 |
| 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 | February 11, 2015 |
| Expiration date | May 31, 2018 |
| Issuing agency | State |
| Address | Sumter, SC 29153 |
| Subwatershed | Upper Pocotaligo River (HUC 030402050401) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 18Pollutants on file
- 16Under a numeric limit
- 18With a violation of any kind
- 8With 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] | 8 | 161 | 69 | November 30, 2025 | 1,420% over the limit |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 58 | 42 | May 31, 2020 | 300% over the limit |
| Coliform, fecal general | 2 | 54 | 8 | May 31, 2020 | 1,050% over the limit |
| pH | 2 | 50 | 4 | September 30, 2025 | |
| Solids, suspended percent removal | 1 | 38 | 2 | March 31, 2020 | 67% over the limit |
| Di[2-ethylhexyl] phthalate [DEHP] | 0 | 2 | 2 | October 31, 2009 | 518% over the limit |
| BOD, 5-day, percent removal | 1 | 37 | 1 | May 31, 2013 | 93% over the limit |
| E. coli | 0 | 1 | 1 | August 31, 2025 | 99,999% over the limit |
| BOD, 5-day, 20 deg. C | 4 | 92 | 0 | ||
| Solids, total suspended | 4 | 92 | 0 | ||
| Chlorine, total residual | 4 | 92 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 46 | 0 | ||
| Copper, total [as Cu] | 4 | 44 | 0 | ||
| Nitrogen, total [as N] | 4 | 32 | 0 | ||
| Phosphorus, total [as P] | 4 | 32 | 0 | ||
| Cyanide, total [as CN] | 4 | 32 | 0 | ||
| Mercury, total [as Hg] | 4 | 32 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 23 | 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
- 3Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| May 1, 2026 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| April 1, 2026 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| June 26, 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.
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, SC0027707.
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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 SC0027707 there.
Nearby on the register
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- Every permit record in South Carolina, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.