Clean Water Act discharge permit · NPDES MO0139327
HIDDEN VALLEY, Warsaw, MO: NPDES MO0139327 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 6Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
HIDDEN VALLEY, held by C4 Group, LLC, holds NPDES permit MO0139327, which discharges to Tributary To Lake Of The Ozarks. EPA’s file records it issued July 19, 2022 and expiring July 31, 2027. 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 | HIDDEN VALLEY |
|---|---|
| Permittee as filed | C4 Group, LLC |
| NPDES ID | MO0139327 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | July 19, 2022 |
| Expiration date | July 31, 2027 |
| Address | Warsaw, MO 65355 |
| Receiving water | Tributary to Lake of the Ozarks |
| Subwatershed | Feaster Branch-Osage River (HUC 102901090107) |
| 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
- 6Pollutants on file
- 6Under a numeric limit
- 6With a violation of any kind
- 4With 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] | 8 | 53 | 41 | June 30, 2026 | 2,621% over the limit |
| E. coli | 2 | 36 | 26 | June 30, 2026 | 1,372,916% over the limit |
| BOD, 5-day, 20 deg. C | 2 | 31 | 19 | June 30, 2025 | 330% over the limit |
| Solids, total suspended | 2 | 28 | 16 | June 30, 2026 | 613% over the limit |
| pH | 2 | 10 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 10 | 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
- 15Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| June 18, 2025 | Effluent Violations - Numeric effluent violation | ST6 |
| July 8, 2024 | Effluent Violations - Narrative Effluent Violation | ST6 |
| June 25, 2024 | Effluent Violations - Numeric effluent violation | ST6 |
| April 22, 2024 | Effluent Violations - Numeric effluent violation | ST6 |
| December 20, 2023 | Effluent Violations - Numeric effluent violation | ST6 |
| September 15, 2023 | Effluent Violations - Numeric effluent violation | ST6 |
| July 20, 2023 | Effluent Violations - Numeric effluent violation | ST6 |
| April 14, 2023 | Effluent Violations - Numeric effluent violation | ST6 |
| December 21, 2022 | Effluent Violations - Numeric effluent violation | ST6 |
| July 12, 2022 | Effluent Violations - Numeric effluent violation | ST6 |
| March 29, 2022 | Reporting Violations - Failure to Submit DMRs | ST6 |
| December 22, 2021 | Effluent Violations - Numeric effluent violation | ST6 |
| October 8, 2021 | Effluent Violations - Numeric effluent violation | ST6 |
| December 21, 2020 | Effluent Violations - Numeric effluent violation | ST6 |
| June 26, 2020 | 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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How we handle your data → Privacy
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 MO0139327 there.
Nearby on the register
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- Every permit record in Missouri, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.