Clean Water Act discharge permit · NPDES MIG640294
MONTROSE MHP WTP, Clio, MI: NPDES MIG640294 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 8Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
MONTROSE MHP WTP, held by Gross Property Ventures, holds NPDES permit MIG640294, which discharges to Pitch Creek. EPA’s file records it issued November 8, 2023 and expiring April 1, 2025. 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 | MONTROSE MHP WTP |
|---|---|
| Permittee as filed | Gross Property Ventures |
| NPDES ID | MIG640294 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | November 8, 2023 |
| Expiration date | April 1, 2025 |
| Issuing agency | State |
| Address | Clio, MI 48420 |
| Receiving water | Pitch Creek |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Spring Brook Drain-Flat River (HUC 040802040513) |
| NAICS | 221310 – Water Supply and Irrigation Systems |
| SIC | 4941 – Water Supply |
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
- 8Pollutants on file
- 8Under a numeric limit
- 8With a violation of any kind
- 2With 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 |
|---|---|---|---|---|---|
| Arsenic, total [as As] | 3 | 35 | 11 | May 31, 2026 | 478% over the limit |
| pH | 2 | 32 | 6 | May 31, 2026 | |
| Chlorine, total residual | 3 | 39 | 0 | ||
| Solids, total suspended | 2 | 38 | 0 | ||
| Iron, total [as Fe] | 2 | 38 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 38 | 0 | ||
| Chlorination duration | 2 | 26 | 0 | ||
| Outfall observation,visual, y/n response | 1 | 19 | 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
- 18Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 21, 2026 | Reporting Violations - Late Submittal of DMRs | ST6 |
| March 21, 2026 | Reporting Violations - Late Submittal of DMRs | ST6 |
| July 21, 2025 | Reporting Violations - Late Submittal of DMRs | ST6 |
| March 21, 2025 | Reporting Violations - Late Submittal of DMRs | ST6 |
| February 21, 2025 | Reporting Violations - Late Submittal of DMRs | ST6 |
| January 21, 2025 | Reporting Violations - Late Submittal of DMRs | ST6 |
| December 21, 2024 | Reporting Violations - Late Submittal of DMRs | ST6 |
| November 21, 2024 | Reporting Violations - Late Submittal of DMRs | ST6 |
| October 21, 2024 | Reporting Violations - Late Submittal of DMRs | ST6 |
| September 21, 2024 | Reporting Violations - Late Submittal of DMRs | ST6 |
| August 21, 2024 | Reporting Violations - Late Submittal of DMRs | ST6 |
| July 21, 2024 | Reporting Violations - Late Submittal of DMRs | ST6 |
| June 21, 2024 | Reporting Violations - Late Submittal of DMRs | ST6 |
| May 21, 2024 | Reporting Violations - Late Submittal of DMRs | ST6 |
| April 21, 2024 | Reporting Violations - Late Submittal of DMRs | ST6 |
| March 21, 2024 | Reporting Violations - Late Submittal of DMRs | ST6 |
| February 21, 2024 | Reporting Violations - Late Submittal of DMRs | ST6 |
| January 21, 2024 | Reporting Violations - Late Submittal of DMRs | 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
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, MIG640294.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
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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 MIG640294 there.
Nearby on the register
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- Every permit record in Michigan, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.