Clean Water Act discharge permit · NPDES MO0102288
WILLOW SPRINGS WWTP, Willow Springs, MO: NPDES MO0102288 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 19Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
WILLOW SPRINGS WWTP, held by City of Willow Springs, holds NPDES permit MO0102288, which discharges to Eleven Point R.. EPA’s file records it issued July 7, 2020 and expiring December 31, 2024. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | WILLOW SPRINGS WWTP |
|---|---|
| Permittee as filed | City of Willow Springs |
| NPDES ID | MO0102288 |
| 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 | July 7, 2020 |
| Expiration date | December 31, 2024 |
| Address | Willow Springs, MO 65793 |
| Receiving water | Eleven Point R. |
| Subwatershed | Headwaters Eleven Point River (HUC 110100110101) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 21Pollutants on file
- 19Under a numeric limit
- 7With 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 |
|---|---|---|---|---|---|
| Chlorine, total residual | 0 | 32 | 32 | May 31, 2011 | 3,800% over the limit |
| Coliform, fecal general | 0 | 9 | 9 | April 30, 2011 | 99,900% over the limit |
| E. coli | 2 | 5 | 5 | July 31, 2023 | 285% over the limit |
| pH | 2 | 4 | 4 | May 31, 2023 | |
| Zinc, total recoverable | 4 | 2 | 2 | January 31, 2024 | 19% over the limit |
| Copper, total recoverable | 4 | 1 | 1 | July 31, 2024 | 18% over the limit |
| Oil and grease [soxhlet extr.] tot. | 2 | 1 | 1 | September 30, 2020 | 10% over the limit |
| Nitrogen, ammonia total [as N] | 22 | 0 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 4 | 0 | 0 | ||
| Nitrite + Nitrate total [as N] | 4 | 0 | 0 | ||
| Phosphorus, total [as P] | 4 | 0 | 0 | ||
| Selenium, total recoverable | 4 | 0 | 0 | ||
| Cadmium, total recoverable | 4 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 0 | 0 | ||
| BOD, 5-day, 20 deg. C | 3 | 0 | 0 | ||
| Solids, total suspended | 3 | 0 | 0 | ||
| Hardness, total [as CaCO3] | 2 | 0 | 0 | ||
| Toxicity [chronic], Ceriodaphnia dubia | 1 | 0 | 0 | ||
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | 1 | 0 | 0 | ||
| BOD, 5-day, percent removal | 1 | 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
- 3Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| July 11, 2025 | Effluent Violations - Numeric effluent violation | ST6 |
| March 3, 2023 | WW SSO - Failure to report violation that may endanger public health 122.41(l)(7) | ST6 |
| August 23, 2019 | Permit Violations - Failure to Submit Timely Permit Renewal Application | 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 MO0102288 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.