Clean Water Act discharge permit · NPDES MO0120057
MDNR LAKE WAPPAPELLO STATE PARK WWTF, Williamsville, MO: NPDES MO0120057 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 6Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
MDNR LAKE WAPPAPELLO STATE PARK WWTF, held by MDNR, Division of State Parks, holds NPDES permit MO0120057, which discharges to Tributary To Lake Wappapello. EPA’s file records it issued January 2, 2018 and expiring March 31, 2022. 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 | MDNR LAKE WAPPAPELLO STATE PARK WWTF |
|---|---|
| Permittee as filed | MDNR, Division of State Parks |
| NPDES ID | MO0120057 |
| 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 |
| Issued | January 2, 2018 |
| Expiration date | March 31, 2022 |
| Address | Williamsville, MO 63967 |
| Receiving water | Tributary to Lake Wappapello |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Wappapelo Dam-St Francis River (HUC 080202020508) |
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 |
|---|---|---|---|---|---|
| Spray irrigation | 4 | 27 | 0 | ||
| Rainfall | 4 | 21 | 0 | ||
| Application rate area sprayed | 4 | 21 | 0 | ||
| BOD, 5-day, 20 deg. C | 0 | 16 | 0 | ||
| pH | 0 | 16 | 0 | ||
| Solids, total suspended | 0 | 16 | 0 | ||
| Flow, in conduit or thru treatment plant | 0 | 16 | 0 | ||
| Coliform, fecal general | 0 | 16 | 0 | ||
| Application rate, gallons spray irrigation | 4 | 12 | 0 | ||
| Spray irrigation, application rate | 4 | 12 | 0 | ||
| Flow, gallons/batch | 0 | 11 | 0 | ||
| Flow rate | 0 | 9 | 0 | ||
| Depth to water level ft below landsurface | 0 | 9 | 0 | ||
| Freeboard | 2 | 6 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MO0120057.
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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MO0120057.
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
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, MO0120057.
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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 MO0120057 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.