Clean Water Act discharge permit · NPDES MO0131024
JCPSD YORKTOWN WWTP, House Springs, MO: NPDES MO0131024 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 12Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
JCPSD YORKTOWN WWTP, held by Jefferson County Public Sewer District, holds NPDES permit MO0131024, which discharges to Bear Creek. EPA’s file records it issued May 24, 2023 and expiring May 31, 2028. 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 | JCPSD YORKTOWN WWTP |
|---|---|
| Permittee as filed | Jefferson County Public Sewer District |
| NPDES ID | MO0131024 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | May 24, 2023 |
| Expiration date | May 31, 2028 |
| Address | House Springs, MO 63051 |
| Receiving water | Bear Creek |
| Subwatershed | Heads Creek (HUC 071401040406) |
| 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
- 15Pollutants on file
- 12Under a numeric limit
- 13With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 20 | 39 | 37 | July 31, 2026 | 1,600% over the limit |
| Ammonia [as N] + unionized ammonia | 0 | 13 | 13 | July 31, 2013 | 1,050% over the limit |
| BOD, 5-day, 20 deg. C | 3 | 13 | 11 | April 30, 2021 | 80% over the limit |
| E. coli | 2 | 8 | 6 | July 31, 2025 | 1,820% over the limit |
| Solids, suspended percent removal | 1 | 6 | 5 | August 31, 2019 | 100% over the limit |
| Solids, total suspended | 3 | 3 | 1 | September 30, 2012 | 20% over the limit |
| BOD, 5-day, percent removal | 1 | 2 | 1 | September 30, 2019 | 32% over the limit |
| Phosphorus, total [as P] | 4 | 14 | 0 | ||
| Nitrogen, total [as N] | 2 | 14 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 4 | 0 | ||
| pH | 2 | 2 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 0 | 1 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 0 | 1 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 4 | 0 | 0 | ||
| Nitrite + Nitrate total [as N] | 4 | 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
- 10Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| August 28, 2025 | Effluent Violations - Numeric effluent violation | ST6 |
| March 31, 2025 | Effluent Violations - Numeric effluent violation | ST6 |
| September 7, 2023 | Effluent Violations - Numeric effluent violation | ST6 |
| October 19, 2022 | Effluent Violations - Numeric effluent violation | ST6 |
| September 30, 2019 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| September 30, 2019 | Effluent Violations - Numeric effluent violation | ST6 |
| September 30, 2019 | Reporting Violations - Failure to Submit DMRs | ST6 |
| January 18, 2019 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| January 18, 2019 | Effluent Violations - Numeric effluent violation | ST6 |
| October 30, 2017 | Permit Violations - Violation Specified in Comment | 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 MO0131024 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.