Clean Water Act discharge permit · NPDES MO0095311
TERRE DULAC OXIDATION DITCH WWTP, Bonne Terre, MO: NPDES MO0095311 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
TERRE DULAC OXIDATION DITCH WWTP, held by Terre Du Lac Utilities Corporation, holds NPDES permit MO0095311, which discharges to Tributary To Big R.. EPA’s file records it issued December 19, 2018 and expiring December 31, 2022. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | TERRE DULAC OXIDATION DITCH WWTP |
|---|---|
| Permittee as filed | Terre Du Lac Utilities Corporation |
| NPDES ID | MO0095311 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | December 19, 2018 |
| Expiration date | December 31, 2022 |
| Address | Bonne Terre, MO 63628 |
| Receiving water | Tributary to Big R. |
| Subwatershed | Blay Creek-Big River (HUC 071401040107) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 11Pollutants on file
- 9Under a numeric limit
- 11With 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] | 4 | 26 | 22 | November 30, 2021 | 1,358% over the limit |
| E. coli | 2 | 12 | 10 | July 31, 2024 | 3,885% over the limit |
| Chlorine, total residual | 2 | 8 | 6 | April 30, 2011 | 100% over the limit |
| Solids, total suspended | 2 | 6 | 2 | April 30, 2009 | 60% over the limit |
| Coliform, fecal general | 0 | 2 | 2 | October 31, 2005 | 99,900% over the limit |
| pH | 2 | 8 | 1 | December 31, 2024 | |
| BOD, 5-day, 20 deg. C | 2 | 4 | 0 | ||
| Nitrogen, total [as N] | 2 | 2 | 0 | ||
| Phosphorus, total [as P] | 2 | 2 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 2 | 0 | ||
| Oxygen, dissolved [DO] | 0 | 2 | 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
- 9Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| June 16, 2022 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| June 16, 2022 | Effluent Violations - Numeric effluent violation | ST6 |
| July 21, 2020 | Effluent Violations - Numeric effluent violation | ST6 |
| July 21, 2020 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| July 21, 2020 | Effluent Violations - Narrative Effluent Violation | ST6 |
| July 21, 2020 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| July 21, 2020 | Management Practice Violations - No Licensed/Certified Operator | ST6 |
| August 9, 2019 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| August 9, 2019 | Effluent Violations - Numeric effluent violation | 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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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 MO0095311 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.