Clean Water Act discharge permit · NPDES MO0136611
MAWC, TAOS WWTF, Taos, MO: NPDES MO0136611 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 10Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
MAWC, TAOS WWTF, held by MISSOURI-AMERICAN WATER COMPANY, holds NPDES permit MO0136611, which discharges to Tributary To Sanford Creek. EPA’s file records it issued April 14, 2022 and expiring April 30, 2027. 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 | MAWC, TAOS WWTF |
|---|---|
| Permittee as filed | MISSOURI-AMERICAN WATER COMPANY |
| NPDES ID | MO0136611 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | April 14, 2022 |
| Expiration date | April 30, 2027 |
| Address | Taos, MO 65101 |
| Receiving water | Tributary to Sanford Creek |
| Subwatershed | Outlet Osage River (HUC 102901110407) |
| 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
- 16Pollutants on file
- 10Under a numeric limit
- 14With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 2 | 143 | 3 | February 28, 2021 | 76% over the limit |
| BOD, 5-day, 20 deg. C | 2 | 142 | 2 | February 28, 2021 | 164% over the limit |
| pH | 2 | 145 | 1 | March 31, 2014 | |
| Nitrogen, ammonia total [as N] | 6 | 141 | 1 | July 31, 2016 | 21% over the limit |
| E. coli, colony forming units [CFU] | 0 | 57 | 1 | August 31, 2018 | 739% over the limit |
| BOD, 5-day, percent removal | 0 | 20 | 1 | January 31, 2021 | 47% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 142 | 0 | ||
| Oil and grease [soxhlet extr.] tot. | 2 | 114 | 0 | ||
| E. coli | 2 | 20 | 0 | ||
| Solids, suspended percent removal | 0 | 19 | 0 | ||
| Phosphorus, total [as P] | 4 | 10 | 0 | ||
| Nitrogen, total [as N] | 0 | 10 | 0 | ||
| Pass/Fail Static 48Hr Acute Ceriodaphnia dubia | 0 | 1 | 0 | ||
| LC50 Static 48Hr Acute Pimephales promelas | 0 | 1 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 4 | 0 | 0 | ||
| Nitrite + Nitrate total [as N] | 4 | 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
- 7Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| December 6, 2021 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| December 6, 2021 | Effluent Violations - Numeric effluent violation | ST6 |
| December 6, 2021 | Permit Violations - Violation Specified in Comment | ST6 |
| January 6, 2020 | Reporting Violations - Failure to Submit DMRs | ST6 |
| December 28, 2018 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| June 29, 2018 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| June 30, 2017 | 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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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 MO0136611 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.