Clean Water Act discharge permit · NPDES MO0043206
DEXTER WEST WWTP, Dexter, MO: NPDES MO0043206 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 14Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
DEXTER WEST WWTP, held by DEXTER, CITY OF, holds NPDES permit MO0043206, which discharges to Tributary To Dudley Main Ditch. EPA’s file records it issued April 24, 2015 and expiring March 31, 2019. 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 | DEXTER WEST WWTP |
|---|---|
| Permittee as filed | DEXTER, CITY OF |
| NPDES ID | MO0043206 |
| 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 | April 24, 2015 |
| Expiration date | March 31, 2019 |
| Address | Dexter, MO 63841 |
| Receiving water | Tributary to Dudley Main Ditch |
| Subwatershed | Lick Creek Ditch (HUC 080202030202) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 16Pollutants on file
- 14Under a numeric limit
- 11With a violation of any kind
- 7With 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 | 3 | 70 | 66 | July 31, 2026 | 260% over the limit |
| Nitrogen, ammonia total [as N] | 4 | 42 | 42 | May 31, 2026 | 378% over the limit |
| Solids, suspended percent removal | 0 | 27 | 27 | June 30, 2026 | 567% over the limit |
| BOD, 5-day, percent removal | 0 | 22 | 22 | June 30, 2026 | 567% over the limit |
| BOD, 5-day, 20 deg. C | 3 | 19 | 17 | March 31, 2026 | 293% over the limit |
| E. coli | 2 | 15 | 11 | April 30, 2026 | 99,999% over the limit |
| pH | 2 | 56 | 4 | August 31, 2025 | |
| Nitrogen, total [as N] | 4 | 4 | 0 | ||
| Phosphorus, total [as P] | 4 | 4 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 1 | 1 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 1 | 1 | 0 | ||
| Oil and grease [soxhlet extr.] tot. | 2 | 0 | 0 | ||
| Hardness, total [as CaCO3] | 2 | 0 | 0 | ||
| Selenium, total recoverable | 2 | 0 | 0 | ||
| Thallium, total recoverable | 2 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 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
- 13Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| September 8, 2023 | Effluent Violations - Numeric effluent violation | ST6 |
| September 8, 2023 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| September 8, 2023 | Permit Violations - Violation Specified in Comment | ST6 |
| April 5, 2023 | Effluent Violations - Numeric effluent violation | ST6 |
| February 24, 2023 | Permit Violations - Violation Specified in Comment | ST6 |
| December 27, 2022 | Effluent Violations - Numeric effluent violation | ST6 |
| June 27, 2022 | Effluent Violations - Numeric effluent violation | ST6 |
| September 29, 2021 | Effluent Violations - Numeric effluent violation | ST6 |
| July 7, 2021 | Effluent Violations - Numeric effluent violation | ST6 |
| March 31, 2021 | Effluent Violations - Numeric effluent violation | ST6 |
| October 9, 2020 | Effluent Violations - Numeric effluent violation | ST6 |
| July 28, 2020 | Effluent Violations - Narrative Effluent Violation | ST6 |
| July 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 MO0043206 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.