Clean Water Act discharge permit · NPDES TN0024201
AUB-OOSTANAULA CREEK STP, Athens, TN: NPDES TN0024201 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 20Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
AUB-OOSTANAULA CREEK STP, held by Athens Utilities Board, holds NPDES permit TN0024201, which discharges to Hiwassee. EPA’s file records it issued October 4, 2018 and expiring October 31, 2022. 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 | AUB-OOSTANAULA CREEK STP |
|---|---|
| Permittee as filed | Athens Utilities Board |
| NPDES ID | TN0024201 |
| 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 | October 4, 2018 |
| Expiration date | October 31, 2022 |
| Issuing agency | TDEC - DWR |
| Address | Athens, TN 37303 |
| Receiving water | Hiwassee |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Oostanaula Creek Lower (HUC 060200021102) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 27Pollutants on file
- 20Under a numeric limit
- 22With a violation of any kind
- 6With 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 | 3 | 20 | 20 | May 31, 2026 | 2,147,483,650% over the limit |
| E. coli, MTEC-MF | 0 | 11 | 5 | November 30, 2003 | 368% over the limit |
| IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubia | 1 | 7 | 4 | June 30, 2026 | 94% over the limit |
| SSO, Dry Weather | 3 | 3 | 3 | February 29, 2024 | 2,147,483,650% over the limit |
| Cyanide, total [as CN] | 0 | 10 | 2 | November 30, 2012 | 3,471% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 12 | 15 | 1 | May 31, 2022 | 21% over the limit |
| Solids, total suspended | 7 | 14 | 0 | ||
| Nitrogen, ammonia total [as N] | 10 | 10 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 8 | 0 | ||
| pH | 2 | 4 | 0 | ||
| Nitrogen, total [as N] | 2 | 4 | 0 | ||
| Phosphorus, total [as P] | 2 | 4 | 0 | ||
| Solids, suspended percent removal | 2 | 4 | 0 | ||
| Overflows | 0 | 4 | 0 | ||
| Carbonaceous oxygen demand, % removal | 0 | 4 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 2 | 0 | ||
| Solids, settleable | 1 | 2 | 0 | ||
| Chlorine, total residual | 1 | 2 | 0 | ||
| IC25 Static Renewal 7 Day Chronic Chrpimephales | 1 | 2 | 0 | ||
| Bypass valve | 0 | 2 | 0 | ||
| LC50 Static 48Hr Acute Ceriodaphnia dubia | 0 | 1 | 0 | ||
| LC50 Static 48Hr Acute Pimephales promelas | 0 | 1 | 0 | ||
| E. coli | 3 | 0 | 0 | ||
| Release [Sewer], Dry Weather | 2 | 0 | 0 | ||
| Release [Sewer], Wet Weather | 2 | 0 | 0 | ||
| Bypass of Treatment Facility | 2 | 0 | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES TN0024201.
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, TN0024201.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
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 TN0024201 there.
Nearby on the register
- Discharge permits in Athens
- Every permit record in Athens, A to Z
- Discharge permits in Tennessee
- Every permit record in Tennessee, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.