Clean Water Act discharge permit · NPDES MO0100714
WINONA WWTP, Winona, MO: NPDES MO0100714 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 14Pollutants under a numeric limit
- 9Pollutants with an effluent exceedance
WINONA WWTP, held by City of Winona, holds NPDES permit MO0100714, which discharges to Pike Creek. EPA’s file records it issued May 22, 2019 and expiring September 30, 2023. 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 | WINONA WWTP |
|---|---|
| Permittee as filed | City of Winona |
| NPDES ID | MO0100714 |
| 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 | May 22, 2019 |
| Expiration date | September 30, 2023 |
| Address | Winona, MO 65588 |
| Receiving water | Pike Creek |
| Subwatershed | Upper Pike Creek (HUC 110100080401) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 16Pollutants on file
- 14Under a numeric limit
- 14With 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 |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 2 | 47 | 35 | January 31, 2026 | 2,340% over the limit |
| E. coli | 2 | 28 | 22 | July 31, 2026 | 1,820% over the limit |
| Solids, total suspended | 2 | 33 | 20 | March 31, 2025 | 227% over the limit |
| BOD, 5-day, percent removal | 1 | 19 | 16 | June 30, 2025 | 567% over the limit |
| Nitrogen, ammonia total [as N] | 10 | 27 | 15 | October 31, 2025 | 1,288% over the limit |
| pH | 2 | 14 | 12 | January 31, 2021 | |
| Solids, suspended percent removal | 1 | 15 | 11 | February 28, 2025 | 567% over the limit |
| Coliform, fecal general | 0 | 8 | 6 | November 30, 2013 | 99,900% over the limit |
| Ammonia [as N] + unionized ammonia | 0 | 2 | 2 | December 31, 2013 | 78% over the limit |
| Nitrogen, Kjeldahl, total [as N] | 4 | 14 | 0 | ||
| Nitrite + Nitrate total [as N] | 4 | 8 | 0 | ||
| Phosphorus, total [as P] | 4 | 8 | 0 | ||
| Oil and grease [soxhlet extr.] tot. | 2 | 4 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| July 12, 2022 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| March 31, 2021 | Effluent Violations - Numeric effluent violation | 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
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, MO0100714.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
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 MO0100714 there.
Nearby on the register
- Discharge permits in Winona
- Every permit record in Winona, A to Z
- Discharge permits in Missouri
- Every permit record in Missouri, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.