Clean Water Act discharge permit · NPDES TN0023515
ELIZABETHTON STP, Elizabethton, TN: NPDES TN0023515 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 17Pollutants under a numeric limit
- 11Pollutants with an effluent exceedance
ELIZABETHTON STP, held by City of Elizabethton, holds NPDES permit TN0023515, which discharges to Watauga. EPA’s file records it issued May 14, 2021 and expiring August 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 | ELIZABETHTON STP |
|---|---|
| Permittee as filed | City of Elizabethton |
| NPDES ID | TN0023515 |
| 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 | May 14, 2021 |
| Expiration date | August 31, 2026 |
| Issuing agency | TDEC - DWR |
| Address | Elizabethton, TN 37643 |
| Receiving water | Watauga |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Gap Creek-Watauga river (HUC 060101030505) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 25Pollutants on file
- 17Under a numeric limit
- 24With a violation of any kind
- 11With 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 |
|---|---|---|---|---|---|
| SSO, Wet Weather | 1 | 12 | 11 | July 31, 2026 | 2,147,483,650% over the limit |
| SSO, Dry Weather | 1 | 6 | 6 | July 31, 2025 | 2,147,483,650% over the limit |
| Solids, suspended percent removal | 2 | 7 | 5 | March 31, 2020 | 51% over the limit |
| E. coli, MTEC-MF | 0 | 7 | 5 | July 31, 2021 | 157% over the limit |
| Solids, total suspended | 7 | 14 | 4 | November 30, 2005 | 58% over the limit |
| IC25 Static Renewal 7 Day Chronic Chrpimephales | 1 | 4 | 4 | March 31, 2017 | 99,999% over the limit |
| Chlorine, total residual | 2 | 4 | 3 | August 31, 2021 | 63% over the limit |
| IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubia | 1 | 3 | 3 | May 31, 2021 | 89% over the limit |
| Solids, settleable | 1 | 3 | 2 | November 30, 2005 | 750% over the limit |
| E. coli | 2 | 2 | 2 | June 30, 2024 | 157% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 7 | 10 | 1 | February 29, 2020 | 2% over the limit |
| Nitrogen, ammonia total [as N] | 5 | 5 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 4 | 0 | ||
| pH | 2 | 2 | 0 | ||
| Overflows | 0 | 2 | 0 | ||
| Carbonaceous oxygen demand, % removal | 0 | 2 | 0 | ||
| Nitrogen, total [as N] | 4 | 1 | 0 | ||
| Phosphorus, total [as P] | 4 | 1 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 1 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 0 | 1 | 0 | ||
| Nitrite + Nitrate total [as N] | 0 | 1 | 0 | ||
| Phosphate, ortho [as PO4] | 0 | 1 | 0 | ||
| Carbon, tot organic [TOC] | 0 | 1 | 0 | ||
| Bypass valve | 0 | 1 | 0 | ||
| BOD, carbonaceous, percent 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| October 22, 2025 | Pretreatment - Failure to Enforce Against I/U | ST6 |
| November 14, 2024 | Pretreatment - Failure to Enforce Against I/U | 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
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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 TN0023515 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.