Clean Water Act discharge permit · NPDES TN0025437
HARRIMAN STP, Harriman, TN: NPDES TN0025437 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 16Pollutants under a numeric limit
- 8Pollutants with an effluent exceedance
HARRIMAN STP, held by City of Harriman, holds NPDES permit TN0025437, which discharges to Tennessee-Watts Bar Lake. EPA’s file records it issued January 20, 2021 and expiring January 31, 2026. 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 | HARRIMAN STP |
|---|---|
| Permittee as filed | City of Harriman |
| NPDES ID | TN0025437 |
| 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 20, 2021 |
| Expiration date | January 31, 2026 |
| Issuing agency | TDEC - DWR |
| Address | Harriman, TN 37748 |
| Receiving water | Tennessee-Watts Bar Lake |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Emory River Lower (HUC 060102080408) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 20Pollutants on file
- 16Under a numeric limit
- 11With 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 |
|---|---|---|---|---|---|
| pH | 4 | 8 | 8 | October 31, 2012 | |
| Solids, suspended percent removal | 4 | 3 | 3 | May 31, 2025 | 51% over the limit |
| IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 3 | 3 | September 30, 2011 | 96% over the limit |
| BOD, 5-day, percent removal | 4 | 2 | 2 | May 31, 2025 | 31% over the limit |
| SSO, Wet Weather | 2 | 2 | 2 | April 30, 2021 | 2,147,483,650% over the limit |
| Solids, total suspended | 14 | 1 | 1 | November 30, 2012 | 111% over the limit |
| Oxygen, dissolved [DO] | 2 | 1 | 1 | March 31, 2013 | 10% over the limit |
| Chlorine, total residual | 2 | 1 | 1 | January 31, 2014 | 10% over the limit |
| Overflows | 0 | 5 | 0 | ||
| Bypass valve | 0 | 4 | 0 | ||
| E. coli, MTEC-MF | 0 | 1 | 0 | ||
| BOD, 5-day, 20 deg. C | 14 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 8 | 0 | 0 | ||
| E. coli | 4 | 0 | 0 | ||
| Solids, settleable | 2 | 0 | 0 | ||
| Nitrogen, total [as N] | 2 | 0 | 0 | ||
| Phosphorus, total [as P] | 2 | 0 | 0 | ||
| SSO, Dry Weather | 2 | 0 | 0 | ||
| LC50 Static 48Hr Acute Ceriodaphnia dubia | 2 | 0 | 0 | ||
| LC50 Static 48Hr Acute Pimephales promelas | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES TN0025437.
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 TN0025437 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.