Clean Water Act discharge permit · NPDES TN0021857
WINCHESTER WWTP, Winchester, TN: NPDES TN0021857 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 20Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
WINCHESTER WWTP, held by Winchester Utilities, holds NPDES permit TN0021857, which discharges to Elk-Upper. EPA’s file records it issued January 1, 2018 and expiring December 31, 2022. 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 | WINCHESTER WWTP |
|---|---|
| Permittee as filed | Winchester Utilities |
| NPDES ID | TN0021857 |
| 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 1, 2018 |
| Expiration date | December 31, 2022 |
| Issuing agency | TDEC - DWR |
| Address | Winchester, TN 37398 |
| Receiving water | Elk-Upper |
| Subwatershed | Boiling Fork Creek (HUC 060300030303) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 22Pollutants on file
- 20Under a numeric limit
- 14With 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 |
|---|---|---|---|---|---|
| BOD, carbonaceous [5 day, 20 C] | 12 | 21 | 21 | September 30, 2010 | 212% over the limit |
| Nitrogen, ammonia total [as N] | 10 | 9 | 9 | September 30, 2024 | 249% over the limit |
| SSO, Dry Weather | 3 | 12 | 7 | January 31, 2026 | 2,147,483,650% over the limit |
| SSO, Wet Weather | 3 | 5 | 5 | March 31, 2025 | 2,147,483,650% over the limit |
| Solids, total suspended | 7 | 1 | 1 | June 30, 2008 | 84% over the limit |
| E. coli, MTEC-MF | 0 | 1 | 1 | August 31, 2016 | 16% over the limit |
| Carbonaceous oxygen demand, % removal | 0 | 1 | 1 | January 31, 2010 | 45% over the limit |
| IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubia | 1 | 2 | 0 | ||
| IC25 Static Renewal 7 Day Chronic Chrpimephales | 1 | 2 | 0 | ||
| Nitrogen, total [as N] | 2 | 1 | 0 | ||
| Phosphorus, total [as P] | 2 | 1 | 0 | ||
| Release [Sewer], Dry Weather | 2 | 1 | 0 | ||
| Solids, suspended percent removal | 2 | 1 | 0 | ||
| Chlorine, total residual | 1 | 1 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 0 | 0 | ||
| pH | 2 | 0 | 0 | ||
| E. coli | 2 | 0 | 0 | ||
| Release [Sewer], Wet Weather | 2 | 0 | 0 | ||
| Bypass of Treatment Facility | 2 | 0 | 0 | ||
| BOD, carbonaceous, percent removal | 2 | 0 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 0 | 0 | ||
| Solids, settleable | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| March 31, 2024 | Monitoring Violations - Analysis not Conducted | 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 September 15, 2026.