Clean Water Act discharge permit · NPDES MO0108090
LA MONTE NW WWTF, La Monte, MO: NPDES MO0108090 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 11Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
LA MONTE NW WWTF, held by City of La Monte, holds NPDES permit MO0108090, which discharges to Tributary To Trib. To S. Fk. Blackwater R.. EPA’s file records it issued September 15, 2017 and expiring September 30, 2021. 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 | LA MONTE NW WWTF |
|---|---|
| Permittee as filed | City of La Monte |
| NPDES ID | MO0108090 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | September 15, 2017 |
| Expiration date | September 30, 2021 |
| Address | La Monte, MO 65337 |
| Receiving water | Tributary to Trib. to S. Fk. Blackwater R. |
| Subwatershed | Beaverdam Creek-South Fork Blackwater River (HUC 103001040501) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 11Pollutants on file
- 11Under a numeric limit
- 9With a violation of any kind
- 3With 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 |
|---|---|---|---|---|---|
| Solids, suspended percent removal | 1 | 8 | 4 | April 30, 2025 | 109% over the limit |
| Solids, total suspended | 2 | 11 | 2 | June 30, 2024 | 33% over the limit |
| BOD, 5-day, 20 deg. C | 2 | 9 | 1 | April 30, 2019 | 4% over the limit |
| pH | 1 | 40 | 0 | ||
| E. coli | 2 | 8 | 0 | ||
| Nitrogen, ammonia total [as N] | 2 | 6 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 6 | 0 | ||
| Oil and grease [soxhlet extr.] tot. | 2 | 4 | 0 | ||
| BOD, 5-day, percent removal | 1 | 4 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 1 | 0 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 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
- 8Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| March 28, 2025 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| March 28, 2025 | Effluent Violations - Numeric effluent violation | ST6 |
| January 10, 2024 | Permit Violations - Violation Specified in Comment | ST6 |
| January 10, 2024 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| August 28, 2019 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| August 28, 2019 | Reporting Violations - Failure to Submit DMRs | ST6 |
| August 28, 2019 | Permit Violations - Violation Specified in Comment | ST6 |
| August 28, 2019 | Effluent Violations - Numeric effluent violation | ST6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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 MO0108090 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.