Clean Water Act discharge permit · NPDES MO0095141
MACKENZIE RIDGE MOBILE HOME PARK WWTP, Hillsboro, MO: NPDES MO0095141 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 8Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
MACKENZIE RIDGE MOBILE HOME PARK WWTP, held by Dawn M. Wegener, holds NPDES permit MO0095141, which discharges to 8-20-13 Mudd V1.0. EPA’s file records it issued October 28, 2016 and expiring September 30, 2021. 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 | MACKENZIE RIDGE MOBILE HOME PARK WWTP |
|---|---|
| Permittee as filed | Dawn M. Wegener |
| NPDES ID | MO0095141 |
| 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 |
| Issued | October 28, 2016 |
| Expiration date | September 30, 2021 |
| Issuing agency | MODNR-Water Protection Program |
| Address | Hillsboro, MO 63050 |
| Receiving water | 8-20-13 MUDD V1.0 |
| Subwatershed | Middle Joachim Creek (HUC 071401010802) |
| SIC | 6515 – Mobile Home Site Operators |
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
- 9Pollutants on file
- 8Under a numeric limit
- 9With a violation of any kind
- 5With 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, 20 deg. C | 2 | 14 | 8 | March 31, 2022 | 130% over the limit |
| Chlorine, total residual | 4 | 12 | 6 | December 31, 2015 | 250% over the limit |
| Solids, total suspended | 2 | 8 | 2 | June 30, 2020 | 87% over the limit |
| E. coli, colony forming units [CFU] | 0 | 2 | 2 | March 31, 2015 | 40% over the limit |
| Nitrogen, ammonia total [as N] | 6 | 7 | 1 | September 30, 2021 | 4% over the limit |
| Oxygen, dissolved [DO] | 2 | 6 | 0 | ||
| pH | 2 | 6 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 6 | 0 | ||
| E. coli | 2 | 6 | 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 |
|---|---|---|
| February 19, 2025 | Effluent Violations - Numeric effluent violation | ST6 |
| June 30, 2022 | Effluent Violations - Numeric effluent violation | ST6 |
| March 2, 2022 | Effluent Violations - Numeric effluent violation | ST6 |
| September 30, 2020 | Effluent Violations - Numeric effluent violation | ST6 |
| June 14, 2017 | Effluent Violations - Numeric effluent violation | ST6 |
| June 14, 2017 | Management Practice Violations - Improper Operation and Maintenance | 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.