Clean Water Act discharge permit · NPDES MO0133728
MDNR, WASHINGTON STATE PARK WWTF, Desoto, MO: NPDES MO0133728 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 6Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
MDNR, WASHINGTON STATE PARK WWTF, held by MDNR, Division of State Parks, holds NPDES permit MO0133728, which discharges to Tributary To Big R.. EPA’s file records it issued December 21, 2017 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 | MDNR, WASHINGTON STATE PARK WWTF |
|---|---|
| Permittee as filed | MDNR, Division of State Parks |
| NPDES ID | MO0133728 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | December 21, 2017 |
| Expiration date | December 31, 2022 |
| Address | Desoto, MO 63020 |
| Receiving water | Tributary to Big R. |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Tiff Creek-Big River (HUC 071401040303) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 14Pollutants on file
- 6Under a numeric limit
- 14With a violation of any kind
- 0With 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 |
|---|---|---|---|---|---|
| Rainfall | 2 | 24 | 0 | ||
| Spray irrigation | 2 | 24 | 0 | ||
| Application rate area sprayed | 2 | 23 | 0 | ||
| Application rate, gallons spray irrigation | 2 | 22 | 0 | ||
| Spray irrigation, application rate | 2 | 22 | 0 | ||
| Freeboard | 1 | 11 | 0 | ||
| pH | 0 | 8 | 0 | ||
| BOD, 5-day, 20 deg. C | 0 | 4 | 0 | ||
| Solids, total suspended | 0 | 4 | 0 | ||
| Nitrogen, ammonia total [as N] | 0 | 3 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 0 | 3 | 0 | ||
| Nitrite + Nitrate total [as N] | 0 | 3 | 0 | ||
| Phosphorus, total [as P] | 0 | 3 | 0 | ||
| Depth to water level ft below landsurface | 0 | 2 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MO0133728.
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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| May 13, 2024 | Reporting Violations - Failure to Submit DMRs | ST6 |
| November 16, 2023 | Reporting Violations - Failure to Submit DMRs | 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.
Watch this permit
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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 MO0133728 there.
Nearby on the register
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- Every permit record in Missouri, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.