Clean Water Act discharge permit · NPDES MO0089362
JCPSD MOCKINGBIRD SUBDIVISION WWTF, Hillsboro, MO: NPDES MO0089362 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 6Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
JCPSD MOCKINGBIRD SUBDIVISION WWTF, held by Mockingbird Wastewater Corp, holds NPDES permit MO0089362, which discharges to Tributary To Big Creek. EPA’s file records it issued October 10, 2018 and expiring December 31, 2021. 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 | JCPSD MOCKINGBIRD SUBDIVISION WWTF |
|---|---|
| Permittee as filed | Mockingbird Wastewater Corp |
| NPDES ID | MO0089362 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | October 10, 2018 |
| Expiration date | December 31, 2021 |
| Address | Hillsboro, MO 63050 |
| Receiving water | Tributary to Big Creek |
| Subwatershed | Sandy Creek (HUC 071401010803) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 7Pollutants on file
- 6Under a numeric limit
- 7With a violation of any kind
- 4With 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 | 40 | 12 | March 31, 2014 | 228% over the limit |
| Ammonia [as N] + unionized ammonia | 0 | 11 | 3 | March 31, 2016 | 432% over the limit |
| pH | 2 | 29 | 1 | September 30, 2018 | |
| Nitrogen, ammonia total [as N] | 4 | 21 | 1 | June 30, 2026 | 15% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 68 | 0 | ||
| Solids, total suspended | 2 | 28 | 0 | ||
| E. coli | 2 | 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
- 10Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| September 19, 2024 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| August 2, 2024 | Reporting Violations - Failure to Submit DMRs | ST6 |
| November 20, 2023 | Reporting Violations - Failure to Submit DMRs | ST6 |
| September 3, 2020 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| July 3, 2019 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| July 3, 2019 | Reporting Violations - Failure to Submit DMRs | ST6 |
| January 26, 2018 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| July 6, 2017 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| March 24, 2017 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| March 24, 2017 | 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 MO0089362 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.