Clean Water Act discharge permit · NPDES MO0121100
MILLERSBURG BUSINESS PARK WWTP, Columbia, MO: NPDES MO0121100 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
MILLERSBURG BUSINESS PARK WWTP, held by Callaway County Sewer District, holds NPDES permit MO0121100, which discharges to Tributary To Sally Branch. EPA’s file records it issued March 23, 2022 and expiring March 31, 2027. 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 | MILLERSBURG BUSINESS PARK WWTP |
|---|---|
| Permittee as filed | Callaway County Sewer District |
| NPDES ID | MO0121100 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | March 23, 2022 |
| Expiration date | March 31, 2027 |
| Address | Columbia, MO 65201 |
| Receiving water | Tributary to Sally Branch |
| Subwatershed | Headwaters Cedar Creek (HUC 103001021002) |
| 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
- 9Pollutants on file
- 9Under a numeric limit
- 9With 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 |
|---|---|---|---|---|---|
| E. coli | 2 | 50 | 32 | December 31, 2025 | 178,541% over the limit |
| Nitrogen, ammonia total [as N] | 8 | 31 | 11 | March 31, 2025 | 833% over the limit |
| BOD, 5-day, 20 deg. C | 3 | 29 | 7 | June 30, 2022 | 577% over the limit |
| Solids, suspended percent removal | 1 | 6 | 6 | December 31, 2025 | 567% over the limit |
| BOD, 5-day, percent removal | 1 | 4 | 4 | December 31, 2025 | 567% over the limit |
| Solids, total suspended | 3 | 27 | 3 | March 31, 2016 | 127% over the limit |
| pH | 2 | 25 | 1 | September 30, 2019 | |
| Flow, in conduit or thru treatment plant | 2 | 22 | 0 | ||
| Oil and grease [soxhlet extr.] tot. | 2 | 20 | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MO0121100.
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
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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 MO0121100 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.