Clean Water Act discharge permit · NPDES MO0042579
CASSVILLE WWTP, Cassville, MO: NPDES MO0042579 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 16Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
CASSVILLE WWTP, held by City of Cassville, holds NPDES permit MO0042579, which discharges to Flat Cr.. EPA’s file records it issued November 15, 2021 and expiring March 31, 2026. 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 | CASSVILLE WWTP |
|---|---|
| Permittee as filed | City of Cassville |
| NPDES ID | MO0042579 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | November 15, 2021 |
| Expiration date | March 31, 2026 |
| Address | Cassville, MO 65625 |
| Receiving water | Flat Cr. |
| Subwatershed | Corder Hollow-Flat Creek (HUC 110100020402) |
| Program components on file | Biosolids, 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
- 29Pollutants on file
- 16Under a numeric limit
- 26With 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 |
|---|---|---|---|---|---|
| BOD, 5-day, percent removal | 1 | 4 | 4 | June 30, 2025 | 100% over the limit |
| Oil and grease [soxhlet extr.] tot. | 2 | 7 | 3 | March 31, 2021 | 1,100% over the limit |
| Solids, suspended percent removal | 1 | 3 | 3 | June 30, 2025 | 91% over the limit |
| pH | 2 | 8 | 2 | October 31, 2011 | |
| Phosphorus, total [as P] | 4 | 4 | 2 | August 31, 2010 | 50% over the limit |
| E. coli | 2 | 1 | 1 | May 31, 2024 | 284% over the limit |
| Oxygen, dissolved [DO] | 0 | 30 | 0 | ||
| Nitrogen, total [as N] | 0 | 24 | 0 | ||
| Aluminum, total recoverable | 4 | 22 | 0 | ||
| Cyanide, free [amenable to chlorination] | 4 | 8 | 0 | ||
| Cadmium, total recoverable | 2 | 8 | 0 | ||
| Lead, total recoverable | 2 | 8 | 0 | ||
| Nickel, total recoverable | 0 | 8 | 0 | ||
| Silver total recoverable | 0 | 8 | 0 | ||
| Zinc, total recoverable | 0 | 8 | 0 | ||
| Copper, total recoverable | 0 | 8 | 0 | ||
| Chromium, hexavalent dissolved [as Cr] | 0 | 8 | 0 | ||
| Chromium, trivalent total recoverable | 0 | 8 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 4 | 0 | ||
| Hardness, total [as CaCO3] | 0 | 4 | 0 | ||
| BOD, 5-day, 20 deg. C | 3 | 3 | 0 | ||
| Solids, total suspended | 3 | 3 | 0 | ||
| Pass/Fail Static 48Hr Acute Ceriodaphnia dubia | 0 | 3 | 0 | ||
| LC50 Static 48Hr Acute Pimephales promelas | 0 | 3 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 0 | 1 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 0 | 1 | 0 | ||
| Nitrogen, ammonia total [as N] | 4 | 0 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 4 | 0 | 0 | ||
| Nitrite + Nitrate total [as N] | 4 | 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
- 5Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| October 25, 2021 | Pretreatment - Failure to Develop/Enforce Standards | ST6 |
| December 6, 2017 | Permit Violations - Violation Specified in Comment | ST6 |
| December 6, 2017 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| December 6, 2017 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| December 4, 2017 | Pretreatment - Failure to Develop/Enforce Standards | 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.