Clean Water Act discharge permit · NPDES MO0109240
DOWNING WWTF, Downing, MO: NPDES MO0109240 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 11Pollutants under a numeric limit
- 9Pollutants with an effluent exceedance
DOWNING WWTF, held by City of Downing, holds NPDES permit MO0109240, which discharges to Tributary To N. Fabius R.. EPA’s file records it issued February 28, 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 | DOWNING WWTF |
|---|---|
| Permittee as filed | City of Downing |
| NPDES ID | MO0109240 |
| 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 | February 28, 2018 |
| Expiration date | March 31, 2022 |
| Address | Downing, MO 63536 |
| Receiving water | Tributary to N. Fabius R. |
| Subwatershed | Downing Reservoir-North Fabius River (HUC 071100020105) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 14Pollutants on file
- 11Under a numeric limit
- 12With a violation of any kind
- 9With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 2 | 33 | 19 | July 31, 2019 | 186% over the limit |
| BOD, 5-day, percent removal | 1 | 12 | 7 | March 31, 2022 | 186% over the limit |
| Solids, suspended percent removal | 1 | 12 | 7 | March 31, 2023 | 99,999% over the limit |
| E. coli | 2 | 16 | 6 | October 31, 2021 | 1,162% over the limit |
| Oil and grease [soxhlet extr.] tot. | 2 | 19 | 5 | February 28, 2018 | 47% over the limit |
| BOD, 5-day, 20 deg. C | 2 | 18 | 4 | May 31, 2020 | 182% over the limit |
| E. coli, colony forming units [CFU] | 0 | 11 | 3 | July 31, 2016 | 183% over the limit |
| pH | 1 | 50 | 2 | November 30, 2019 | |
| Coliform, fecal general | 0 | 1 | 1 | May 31, 2013 | 25% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 14 | 0 | ||
| Nitrogen, ammonia total [as N] | 2 | 12 | 0 | ||
| Ammonia [as N] + unionized ammonia | 0 | 2 | 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
- 19Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| March 28, 2025 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| May 30, 2024 | Effluent Violations - Numeric effluent violation | ST6 |
| May 22, 2024 | Permit Violations - Violation Specified in Comment | ST6 |
| May 22, 2024 | Management Practice Violations - No Licensed/Certified Operator | ST6 |
| March 29, 2024 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| March 29, 2024 | Effluent Violations - Numeric effluent violation | ST6 |
| March 29, 2024 | Permit Violations - Violation Specified in Comment | ST6 |
| November 16, 2023 | Reporting Violations - Failure to Submit DMRs | ST6 |
| June 30, 2023 | Effluent Violations - Numeric effluent violation | ST6 |
| March 31, 2023 | Reporting Violations - Failure to Submit DMRs | ST6 |
| March 31, 2022 | Effluent Violations - Numeric effluent violation | ST6 |
| December 27, 2019 | Pretreatment - Failure to Develop/Enforce Standards | ST6 |
| December 27, 2019 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| December 20, 2019 | Effluent Violations - Numeric effluent violation | ST6 |
| December 20, 2019 | Management Practice Violations - No Licensed/Certified Operator | ST6 |
| December 20, 2019 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| December 20, 2019 | Reporting Violations - Failure to Submit DMRs | ST6 |
| December 20, 2019 | Permit Violations - Violation Specified in Comment | ST6 |
| September 28, 2018 | Reporting Violations - Improper/ Incorrect Reporting | 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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Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.