Clean Water Act discharge permit · NPDES MO0131296
TROY SOUTHEAST WWTP, Troy, MO: NPDES MO0131296 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 17Pollutants under a numeric limit
- 9Pollutants with an effluent exceedance
TROY SOUTHEAST WWTP, held by City of Troy, holds NPDES permit MO0131296, which discharges to Cuivre R.. EPA’s file records it issued June 11, 2019 and expiring March 31, 2024. 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 SOUTHEAST WWTP |
|---|---|
| Permittee as filed | City of Troy |
| NPDES ID | MO0131296 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | June 11, 2019 |
| Expiration date | March 31, 2024 |
| Address | Troy, MO 63379 |
| Receiving water | Cuivre R. |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Spring Creek-Cuivre River (HUC 071100080403) |
| Program components on file | Biosolids, POTW |
| 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
- 27Pollutants on file
- 17Under a numeric limit
- 18With a violation of any kind
- 9With 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 |
|---|---|---|---|---|---|
| Oxygen, dissolved [DO] | 0 | 57 | 53 | August 31, 2016 | 99,999% over the limit |
| Ammonia [as N] + unionized ammonia | 0 | 8 | 8 | June 30, 2012 | 224% over the limit |
| Nitrogen, ammonia total [as N] | 8 | 6 | 6 | January 31, 2018 | 99% over the limit |
| Solids, total suspended | 4 | 9 | 4 | March 31, 2026 | 1,500% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 2 | 7 | 4 | June 30, 2020 | 60% over the limit |
| Coliform, fecal general | 0 | 3 | 3 | July 31, 2011 | 13,900% over the limit |
| CBOD5+NH3-N | 0 | 40 | 1 | July 31, 2011 | 25% over the limit |
| BOD, 5-day, 20 deg. C | 2 | 3 | 1 | June 30, 2025 | 73% over the limit |
| E. coli | 2 | 1 | 1 | September 30, 2017 | 0% over the limit |
| Oil and grease [soxhlet extr.] tot. | 2 | 2 | 0 | ||
| Hardness, total [as CaCO3] | 2 | 2 | 0 | ||
| Fluoride, total [as F] | 0 | 2 | 0 | ||
| Selenium, total recoverable | 0 | 2 | 0 | ||
| Thallium, total recoverable | 0 | 2 | 0 | ||
| Cadmium, total recoverable | 0 | 2 | 0 | ||
| Lead, total recoverable | 0 | 2 | 0 | ||
| Solids, suspended percent removal | 1 | 1 | 0 | ||
| BOD, 5-day, percent removal | 0 | 1 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 6 | 0 | 0 | ||
| Nitrite + Nitrate total [as N] | 6 | 0 | 0 | ||
| Phosphorus, total [as P] | 6 | 0 | 0 | ||
| pH | 2 | 0 | 0 | ||
| Copper, total recoverable | 2 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 0 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 2 | 0 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 2 | 0 | 0 | ||
| BOD, carbonaceous, 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
- 5Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| May 2, 2024 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| May 2, 2024 | Permit Violations - Violation Specified in Comment | ST6 |
| September 9, 2022 | Permit Violations - Violation Specified in Comment | ST6 |
| September 9, 2022 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| August 29, 2018 | Reporting Violations - Improper/ Incorrect Reporting | 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 October 14, 2026.