Clean Water Act discharge permit · NPDES MO0129658
MAWC WARDSVILLE NW WWTF, Jefferson City, MO: NPDES MO0129658 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
MAWC WARDSVILLE NW WWTF, held by Missouri-American Water Company, holds NPDES permit MO0129658, which discharges to Herbrandt Branch. EPA’s file records it issued October 23, 2020 and expiring June 30, 2025. 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 | MAWC WARDSVILLE NW WWTF |
|---|---|
| Permittee as filed | Missouri-American Water Company |
| NPDES ID | MO0129658 |
| 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 23, 2020 |
| Expiration date | June 30, 2025 |
| Address | Jefferson City, MO 65101 |
| Receiving water | Herbrandt Branch |
| Subwatershed | Moreau River (HUC 103001021207) |
| 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
- 12Pollutants on file
- 9Under a numeric limit
- 8With 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 | 96 | 96 | July 31, 2026 | 2,315% over the limit |
| BOD, 5-day, 20 deg. C | 2 | 14 | 14 | March 31, 2025 | 220% over the limit |
| Ammonia [as N] + unionized ammonia | 0 | 9 | 9 | May 31, 2013 | 826% over the limit |
| Solids, total suspended | 2 | 4 | 2 | August 31, 2013 | 47% over the limit |
| pH | 2 | 7 | 1 | January 31, 2025 | |
| E. coli | 2 | 1 | 1 | May 31, 2017 | 95% over the limit |
| Coliform, fecal general | 0 | 1 | 1 | September 30, 2008 | 149% over the limit |
| Oil and grease [soxhlet extr.] tot. | 0 | 2 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 4 | 0 | 0 | ||
| Nitrite + Nitrate total [as N] | 4 | 0 | 0 | ||
| Phosphorus, total [as P] | 4 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 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
- 6Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| August 18, 2022 | Effluent Violations - Numeric effluent violation | ST6 |
| October 20, 2020 | Reporting Violations - Failure to Submit DMRs | ST6 |
| July 6, 2020 | Effluent Violations - Numeric effluent violation | ST6 |
| July 9, 2019 | Effluent Violations - Numeric effluent violation | ST6 |
| June 29, 2018 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| January 19, 2018 | 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.
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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 MO0129658 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.