Clean Water Act discharge permit · NPDES MO0108421
BCRSD MIDWAY ARMS WWTP, Columbia, MO: NPDES MO0108421 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 8Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
BCRSD MIDWAY ARMS WWTP, held by Boone County Regional Sewer District, holds NPDES permit MO0108421, which discharges to Tributary To Henderson Branch. EPA’s file records it issued February 14, 2019 and expiring June 30, 2020. 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 | BCRSD MIDWAY ARMS WWTP |
|---|---|
| Permittee as filed | Boone County Regional Sewer District |
| NPDES ID | MO0108421 |
| 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 14, 2019 |
| Expiration date | June 30, 2020 |
| Address | Columbia, MO 65203 |
| Receiving water | Tributary to Henderson Branch |
| Subwatershed | Callahan Creek-Perche Creek (HUC 103001020708) |
| SIC | 4952 – Sewerage Systems |
| Other EPA IDs (FRS) | RCRA handler MOR000538934 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 10Pollutants on file
- 8Under a numeric limit
- 6With a violation of any kind
- 5With 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 | 21 | 21 | March 31, 2024 | 26,237% over the limit |
| BOD, 5-day, 20 deg. C | 2 | 18 | 18 | March 31, 2024 | 98% over the limit |
| Coliform, fecal general | 0 | 14 | 14 | April 30, 2010 | 2,740% over the limit |
| E. coli, colony forming units [CFU] | 0 | 11 | 5 | October 31, 2016 | 99,999% over the limit |
| pH | 2 | 2 | 2 | December 31, 2007 | |
| Nitrogen, ammonia total [as N] | 2 | 4 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 0 | 0 | ||
| E. coli | 2 | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| May 26, 2023 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| May 26, 2023 | 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, MO0108421.
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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 MO0108421 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.