Clean Water Act discharge permit · NPDES MO0091600
SUMNER WWTF, Sumner, MO: NPDES MO0091600 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
SUMNER WWTF, held by City of Sumner, holds NPDES permit MO0091600, which discharges to Tributary To Grand River. EPA’s file records it issued November 29, 2017 and expiring September 30, 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 | SUMNER WWTF |
|---|---|
| Permittee as filed | City of Sumner |
| NPDES ID | MO0091600 |
| 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 | November 29, 2017 |
| Expiration date | September 30, 2022 |
| Address | Sumner, MO 64681 |
| Receiving water | Tributary to Grand River |
| Subwatershed | City of Sumner-Grand River (HUC 102801031602) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 9Pollutants on file
- 9Under a numeric limit
- 9With 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, percent removal | 1 | 12 | 2 | September 30, 2021 | 186% over the limit |
| E. coli | 2 | 11 | 1 | June 30, 2022 | 68% over the limit |
| BOD, 5-day, 20 deg. C | 2 | 33 | 0 | ||
| Solids, total suspended | 2 | 33 | 0 | ||
| Nitrogen, ammonia total [as N] | 4 | 26 | 0 | ||
| Oil and grease [soxhlet extr.] tot. | 2 | 26 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 26 | 0 | ||
| pH | 1 | 24 | 0 | ||
| Solids, suspended percent removal | 1 | 10 | 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
- 19Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| December 30, 2025 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| September 29, 2025 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| September 29, 2025 | Effluent Violations - Numeric effluent violation | ST6 |
| April 18, 2025 | Reporting Violations - Failure to Submit DMRs | ST6 |
| March 28, 2025 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| December 20, 2024 | Reporting Violations - Failure to Submit DMRs | ST6 |
| December 20, 2024 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| December 20, 2024 | Permit Violations - Violation Specified in Comment | ST6 |
| November 12, 2024 | Permit Violations - Violation Specified in Comment | ST6 |
| November 12, 2024 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| November 12, 2024 | Reporting Violations - Failure to Submit DMRs | ST6 |
| November 12, 2024 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| November 16, 2023 | Reporting Violations - Failure to Submit DMRs | ST6 |
| June 30, 2023 | Effluent Violations - Numeric effluent violation | ST6 |
| June 30, 2023 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| July 1, 2020 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| July 1, 2020 | Effluent Violations - Numeric effluent violation | ST6 |
| September 30, 2019 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| July 9, 2019 | Reporting Violations - Failure to Submit DMRs | ST6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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 MO0091600 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.