Clean Water Act discharge permit · NPDES MO0058246
LA PLATA WWTF, La Plata, MO: NPDES MO0058246 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 7Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
LA PLATA WWTF, held by City of La Plata, holds NPDES permit MO0058246, which discharges to Tributary To Long Branch. EPA’s file records it issued August 10, 2017 and expiring June 30, 2021. 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 | LA PLATA WWTF |
|---|---|
| Permittee as filed | City of La Plata |
| NPDES ID | MO0058246 |
| 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 | August 10, 2017 |
| Expiration date | June 30, 2021 |
| Address | La Plata, MO 63549 |
| Receiving water | Tributary to Long Branch |
| Subwatershed | Bee Branch-Middle Fork Salt River (HUC 071100060201) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 15Pollutants on file
- 7Under a numeric limit
- 12With a violation of any kind
- 2With 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 |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 0 | 44 | 12 | December 31, 2009 | 425% over the limit |
| Nitrogen, ammonia total [as N] | 0 | 29 | 11 | April 30, 2009 | 600% over the limit |
| Coliform, fecal general | 1 | 32 | 0 | ||
| pH | 0 | 28 | 0 | ||
| Solids, total suspended | 0 | 16 | 0 | ||
| Spray irrigation | 12 | 4 | 0 | ||
| Rainfall | 2 | 4 | 0 | ||
| Application rate area sprayed | 12 | 3 | 0 | ||
| Depth to water level ft below landsurface | 0 | 3 | 0 | ||
| Flow rate | 0 | 1 | 0 | ||
| Flow, gallons/batch | 0 | 1 | 0 | ||
| Application daily spray irrigation | 0 | 1 | 0 | ||
| Application rate, gallons spray irrigation | 12 | 0 | 0 | ||
| Spray irrigation, application rate | 12 | 0 | 0 | ||
| Freeboard | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| May 31, 2023 | Permit Violations - Violation Specified in Comment | ST6 |
| June 28, 2018 | Permit Violations - Violation Specified in Comment | 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 MO0058246 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.