Clean Water Act discharge permit · NPDES MO0040177
SHELDON WWTF, Sheldon, MO: NPDES MO0040177 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 10Pollutants under a numeric limit
- 8Pollutants with an effluent exceedance
SHELDON WWTF, held by City of Sheldon, holds NPDES permit MO0040177, which discharges to Tributary To Little Clear Creek. EPA’s file records it issued September 5, 2018 and expiring June 30, 2022. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | SHELDON WWTF |
|---|---|
| Permittee as filed | City of Sheldon |
| NPDES ID | MO0040177 |
| 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 | September 5, 2018 |
| Expiration date | June 30, 2022 |
| Address | Sheldon, MO 64784 |
| Receiving water | Tributary to Little Clear Creek |
| Subwatershed | Headwaters Clear Creek (HUC 102901050101) |
| SIC | 4952 – Sewerage Systems |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 11Pollutants on file
- 10Under a numeric limit
- 9With a violation of any kind
- 8With 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 | 2 | 17 | 9 | April 30, 2024 | 113% over the limit |
| E. coli | 0 | 8 | 8 | July 31, 2025 | 3,863% over the limit |
| BOD, 5-day, percent removal | 1 | 12 | 7 | April 30, 2026 | 186% over the limit |
| pH | 2 | 61 | 6 | June 30, 2025 | |
| Solids, total suspended | 2 | 14 | 6 | June 30, 2019 | 230% over the limit |
| Solids, suspended percent removal | 1 | 11 | 6 | June 30, 2026 | 186% over the limit |
| Oil and grease [soxhlet extr.] tot. | 2 | 12 | 2 | April 30, 2009 | 156% over the limit |
| Nitrogen, ammonia total [as N] | 2 | 10 | 2 | March 31, 2026 | 85% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 8 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 1 | 0 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 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
- 12Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| January 13, 2026 | Effluent Violations - Numeric effluent violation | ST6 |
| September 25, 2024 | Effluent Violations - Numeric effluent violation | ST6 |
| April 20, 2023 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| April 20, 2023 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| April 20, 2023 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| September 23, 2022 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| September 23, 2022 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| September 23, 2022 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| December 27, 2019 | Reporting Violations - Failure to Submit DMRs | ST6 |
| October 10, 2017 | Permit Violations - Violation Specified in Comment | ST6 |
| October 10, 2017 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| October 10, 2017 | Management Practice Violations - Improper Operation and Maintenance | 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 MO0040177 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.