Clean Water Act discharge permit · NPDES MIG250510
METAL TECHNOLOGIES-THREE RIVERS, Three Rivers, MI: NPDES MIG250510 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 3Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
METAL TECHNOLOGIES-THREE RIVERS, held by Three Rivers Gray Iron LLC, holds NPDES permit MIG250510, which discharges to St Joseph River. EPA’s file records it issued February 11, 2021 and expiring April 1, 2023. 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 | METAL TECHNOLOGIES-THREE RIVERS |
|---|---|
| Permittee as filed | Three Rivers Gray Iron LLC |
| NPDES ID | MIG250510 |
| 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 | February 11, 2021 |
| Expiration date | April 1, 2023 |
| Issuing agency | State |
| Address | Three Rivers, MI 49093 |
| Receiving water | St Joseph River |
| Subwatershed | City of Florence-Saint Joseph River (HUC 040500010904) |
| NAICS | 333511 – Industrial Mold Manufacturing |
| SIC | 3321 – Gray And Ductile Iron Foundries |
| Other EPA IDs (FRS) | RCRA handler MID005157078; ICIS-AIR source MI00000000000B2015 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 3Pollutants on file
- 3Under a numeric limit
- 0With a violation of any kind
- 0With 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 |
|---|---|---|---|---|---|
| Flow, in conduit or thru treatment plant | 2 | 0 | 0 | ||
| Temperature, water deg. fahrenheit | 1 | 0 | 0 | ||
| Outfall observation,visual, y/n response | 1 | 0 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MIG250510.
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
- 4Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| March 21, 2026 | Reporting Violations - Late Submittal of DMRs | ST6 |
| April 21, 2025 | Reporting Violations - Late Submittal of DMRs | ST6 |
| February 21, 2024 | Reporting Violations - Late Submittal of DMRs | ST6 |
| November 21, 2022 | 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
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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 MIG250510 there.
Nearby on the register
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- Every permit record in Three Rivers, A to Z
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- Every permit record in Michigan, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.