Clean Water Act discharge permit · NPDES MO0115410
CCSD CATAWISSA WWTF, Catawissa, MO: NPDES MO0115410 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 14Pollutants under a numeric limit
- 10Pollutants with an effluent exceedance
CCSD CATAWISSA WWTF, held by Calvey Creek Sewer District, holds NPDES permit MO0115410, which discharges to Tributary To Winch Creek. EPA’s file records it issued January 1, 2025 and expiring December 31, 2029. 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 | CCSD CATAWISSA WWTF |
|---|---|
| Permittee as filed | Calvey Creek Sewer District |
| NPDES ID | MO0115410 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | January 1, 2025 |
| Expiration date | December 31, 2029 |
| Address | Catawissa, MO 63015 |
| Receiving water | Tributary to Winch Creek |
| Subwatershed | Brush Creek-Meramec River (HUC 071401020902) |
| 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
- 18Pollutants on file
- 14Under a numeric limit
- 17With a violation of any kind
- 10With 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 |
|---|---|---|---|---|---|
| Coliform, fecal general | 0 | 20 | 20 | July 31, 2014 | 99,999% over the limit |
| Nitrogen, ammonia total [as N] | 10 | 36 | 18 | March 31, 2026 | 1,077% over the limit |
| E. coli | 2 | 17 | 17 | April 30, 2024 | 4,281% over the limit |
| Chlorine, total residual | 2 | 14 | 14 | May 31, 2026 | 109,900% over the limit |
| Solids, suspended percent removal | 1 | 16 | 8 | February 28, 2023 | 186% over the limit |
| BOD, 5-day, 20 deg. C | 6 | 52 | 6 | April 30, 2024 | 58% over the limit |
| Solids, total suspended | 6 | 49 | 5 | June 30, 2025 | 57% over the limit |
| BOD, 5-day, percent removal | 1 | 12 | 4 | April 30, 2024 | 186% over the limit |
| pH | 4 | 59 | 2 | March 31, 2018 | |
| Oil and grease [soxhlet extr.] tot. | 0 | 22 | 2 | April 30, 2012 | 90% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 46 | 0 | ||
| Phosphorus, total [as P] | 6 | 22 | 0 | ||
| Nitrogen, total [as N] | 4 | 20 | 0 | ||
| Nitrite + Nitrate total [as N] | 6 | 4 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 4 | 2 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 0 | 1 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 0 | 1 | 0 | ||
| Oxygen, dissolved [DO] | 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
- 8Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| May 1, 2026 | Effluent Violations - Numeric effluent violation | ST6 |
| April 5, 2024 | Permit Violations - Unapproved Operation | ST6 |
| September 30, 2019 | Effluent Violations - Numeric effluent violation | ST6 |
| June 13, 2018 | Permit Violations - Violation Specified in Comment | ST6 |
| June 13, 2018 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| October 19, 2017 | Effluent Violations - Numeric effluent violation | ST6 |
| October 19, 2017 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| March 21, 2017 | 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.
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 MO0115410 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.