Clean Water Act discharge permit · NPDES MO0121363
AUGUSTA WWTF, Augusta, MO: NPDES MO0121363 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 11Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
AUGUSTA WWTF, held by PWSD No. 2 of St. Charles County, holds NPDES permit MO0121363, which discharges to Tributary To Bigelow'S Cr.. EPA’s file records it issued July 12, 2017 and expiring June 30, 2021. 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 | AUGUSTA WWTF |
|---|---|
| Permittee as filed | PWSD No. 2 of St. Charles County |
| NPDES ID | MO0121363 |
| 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 12, 2017 |
| Expiration date | June 30, 2021 |
| Address | Augusta, MO 63332 |
| Receiving water | Tributary to Bigelow's Cr. |
| Subwatershed | Labadie Creek-Missouri River (HUC 103002000603) |
| 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
- 13Pollutants on file
- 11Under 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 |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 2 | 7 | 7 | November 30, 2019 | 122% over the limit |
| Chlorine, total residual | 0 | 7 | 7 | September 30, 2016 | 1,513% over the limit |
| BOD, 5-day, percent removal | 1 | 6 | 6 | December 31, 2022 | 373% over the limit |
| E. coli, colony forming units [CFU] | 0 | 3 | 3 | June 30, 2015 | 373% over the limit |
| Nitrogen, ammonia total [as N] | 4 | 15 | 1 | July 31, 2019 | 64% over the limit |
| Solids, total suspended | 2 | 1 | 1 | May 31, 2014 | 9% over the limit |
| Oil and grease [soxhlet extr.] tot. | 2 | 1 | 1 | March 31, 2020 | 93% over the limit |
| pH | 2 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 0 | 0 | ||
| E. coli | 2 | 0 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 1 | 0 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MO0121363.
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 MO0121363 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.