Clean Water Act discharge permit · NPDES AL0032310
TROY WALNUT CREEK WWTP, Troy, AL: NPDES AL0032310 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 19Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
TROY WALNUT CREEK WWTP, held by City of Troy, holds NPDES permit AL0032310. EPA’s file records it issued October 29, 2018 and expiring October 31, 2023. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | TROY WALNUT CREEK WWTP |
|---|---|
| Permittee as filed | City of Troy |
| NPDES ID | AL0032310 |
| 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 29, 2018 |
| Expiration date | October 31, 2023 |
| Address | Troy, AL 36079 |
| Subwatershed | Persimmon Branch-Walnut Creek (HUC 031402020401) |
| Program components on file | Biosolids, POTW, Pretreatment |
| NAICS | 221320 – Sewage Treatment Facilities |
| SIC | 4952 – Sewerage Systems |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 30Pollutants on file
- 19Under a numeric limit
- 27With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 12 | 34 | 18 | July 31, 2026 | 5,355% over the limit |
| E. coli | 8 | 8 | 8 | July 31, 2026 | 1,577% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 16 | 37 | 5 | November 30, 2009 | 60% over the limit |
| Oxygen, dissolved [DO] | 1 | 6 | 2 | October 31, 2002 | 3% over the limit |
| Coliform, fecal general | 0 | 9 | 1 | July 31, 2007 | 12% over the limit |
| Toxicity [chronic], Ceriodaphnia dubia | 1 | 2 | 1 | May 31, 2000 | 99,999% over the limit |
| Solids, total suspended | 12 | 32 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 8 | 16 | 0 | ||
| Nitrite + Nitrate total [as N] | 8 | 16 | 0 | ||
| Phosphorus, total [as P] | 8 | 16 | 0 | ||
| Flow, in conduit or thru treatment plant | 10 | 10 | 0 | ||
| pH | 10 | 8 | 0 | ||
| Lead, total recoverable | 2 | 8 | 0 | ||
| Copper, total recoverable | 2 | 8 | 0 | ||
| Methylene blue active substances | 0 | 8 | 0 | ||
| Solids, total dissolved | 0 | 8 | 0 | ||
| Cyanide, total recoverable | 0 | 8 | 0 | ||
| Hardness, total [as CaCO3] | 0 | 7 | 0 | ||
| Solids, suspended percent removal | 1 | 4 | 0 | ||
| Selenium, total recoverable | 0 | 2 | 0 | ||
| Chlorine, total residual | 2 | 1 | 0 | ||
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | 1 | 1 | 0 | ||
| Thallium, total recoverable | 0 | 1 | 0 | ||
| Copper, dissolved [as Cu] | 0 | 1 | 0 | ||
| Lead, dissolved [as Pb] | 0 | 1 | 0 | ||
| Nickel, dissolved [as Ni] | 0 | 1 | 0 | ||
| Zinc, dissolved [as Zn] | 0 | 1 | 0 | ||
| Oil & Grease | 4 | 0 | 0 | ||
| Zinc, total recoverable | 2 | 0 | 0 | ||
| BOD, carb-5 day, 20 deg C, percent removal | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES AL0032310.
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 AL0032310 there.
Nearby on the register
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- Every permit record in Alabama, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.