Clean Water Act discharge permit · NPDES MO0039659
MAWC, EUREKA WWTF, Eureka, MO: NPDES MO0039659 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 23Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
MAWC, EUREKA WWTF, held by City of Eureka, holds NPDES permit MO0039659, which discharges to Meramec R.. EPA’s file records it issued May 16, 2018 and expiring September 30, 2022. 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, EUREKA WWTF |
|---|---|
| Permittee as filed | City of Eureka |
| NPDES ID | MO0039659 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | May 16, 2018 |
| Expiration date | September 30, 2022 |
| Address | Eureka, MO 63025 |
| Receiving water | Meramec R. |
| Subwatershed | Hamilton Creek-Meramec River (HUC 071401021001) |
| Program components on file | POTW, Pretreatment |
| 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
- 27Pollutants on file
- 23Under a numeric limit
- 27With a violation of any kind
- 6With 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, suspended percent removal | 1 | 29 | 21 | August 31, 2022 | 147% over the limit |
| E. coli | 2 | 22 | 14 | June 30, 2026 | 99,999% over the limit |
| BOD, 5-day, percent removal | 1 | 22 | 14 | July 31, 2021 | 133% over the limit |
| Solids, total suspended | 2 | 52 | 7 | January 31, 2024 | 249% over the limit |
| BOD, 5-day, 20 deg. C | 2 | 51 | 6 | November 30, 2025 | 32% over the limit |
| E. coli, colony forming units [CFU] | 0 | 9 | 1 | April 30, 2015 | 2% over the limit |
| Nitrogen, ammonia total [as N] | 2 | 42 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 40 | 0 | ||
| pH | 2 | 38 | 0 | ||
| Oil and grease [soxhlet extr.] tot. | 2 | 38 | 0 | ||
| Nitrogen, total [as N] | 4 | 26 | 0 | ||
| Phosphorus, total [as P] | 4 | 26 | 0 | ||
| Nickel, total recoverable | 2 | 14 | 0 | ||
| Zinc, total recoverable | 2 | 14 | 0 | ||
| Cadmium, total recoverable | 2 | 14 | 0 | ||
| Lead, total recoverable | 2 | 14 | 0 | ||
| Copper, total recoverable | 2 | 14 | 0 | ||
| Chromium, hexavalent dissolved [as Cr] | 2 | 14 | 0 | ||
| Chromium, trivalent total recoverable | 2 | 14 | 0 | ||
| Hardness, total [as CaCO3] | 2 | 12 | 0 | ||
| Coliform, fecal general | 0 | 6 | 0 | ||
| Pass/Fail Static 48Hr Acute Ceriodaphnia dubia | 0 | 6 | 0 | ||
| LC50 Static 48Hr Acute Pimephales promelas | 0 | 6 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 2 | 1 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 2 | 1 | 0 | ||
| Toxicity [chronic], Ceriodaphnia dubia | 1 | 1 | 0 | ||
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | 1 | 1 | 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
- 7Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| September 15, 2022 | Permit Violations - Violation Specified in Comment | ST6 |
| July 15, 2022 | Permit Violations - Violation Specified in Comment | ST6 |
| May 2, 2022 | Permit Violations - Violation Specified in Comment | ST6 |
| May 2, 2022 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| June 25, 2019 | Permit Violations - Violation Specified in Comment | ST6 |
| October 20, 2017 | Permit Violations - Violation Specified in Comment | ST6 |
| October 20, 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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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.