Clean Water Act discharge permit · NPDES MO0055204
SMITHVILLE WWTP, Smithville, MO: NPDES MO0055204 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 14Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
SMITHVILLE WWTP, held by City of Smithville, holds NPDES permit MO0055204, which discharges to Little Platte River. EPA’s file records it issued December 1, 2020 and expiring June 30, 2025. 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 | SMITHVILLE WWTP |
|---|---|
| Permittee as filed | City of Smithville |
| NPDES ID | MO0055204 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | December 1, 2020 |
| Expiration date | June 30, 2025 |
| Address | Smithville, MO 64089 |
| Receiving water | Little Platte River |
| Subwatershed | Little Platte River (HUC 102400120711) |
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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 12 | 52 | 48 | September 30, 2023 | 540% over the limit |
| E. coli | 2 | 15 | 15 | October 31, 2024 | 45,064% over the limit |
| BOD, 5-day, 20 deg. C | 3 | 10 | 7 | March 31, 2025 | 41% over the limit |
| E. coli, colony forming units [CFU] | 0 | 7 | 7 | April 30, 2019 | 584% over the limit |
| Oil and grease [soxhlet extr.] tot. | 2 | 10 | 4 | February 28, 2017 | 27% over the limit |
| Solids, total suspended | 3 | 7 | 4 | April 30, 2016 | 210% over the limit |
| BOD, 5-day, percent removal | 1 | 3 | 3 | February 28, 2025 | 567% over the limit |
| Phosphorus, total [as P] | 4 | 14 | 0 | ||
| Nitrogen, total [as N] | 0 | 14 | 0 | ||
| pH | 2 | 2 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 2 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 4 | 0 | 0 | ||
| Nitrite + Nitrate total [as N] | 4 | 0 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 2 | 0 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 2 | 0 | 0 | ||
| Solids, suspended percent removal | 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 |
|---|---|---|
| November 16, 2023 | Reporting Violations - Failure to Submit DMRs | ST6 |
| August 29, 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.
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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 MO0055204 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.