Clean Water Act discharge permit · NPDES MIG081310
HIGH-LEVEL TRUNKLINE-ANN ARBOR, Ann Arbor, MI: NPDES MIG081310 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 17Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
HIGH-LEVEL TRUNKLINE-ANN ARBOR, held by City of Ann Arbor, holds NPDES permit MIG081310, which discharges to Huron River. EPA’s file records it issued May 19, 2026 and expiring April 1, 2030. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
What the register holds for HIGH-LEVEL TRUNKLINE-ANN ARBOR: its NPDES ID, its permit type and status, its dates, its address in Ann Arbor, Michigan, its receiving water, and 17 pollutants under a numeric limit. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MIG081310.
Identity
| Facility as filed | HIGH-LEVEL TRUNKLINE-ANN ARBOR |
|---|---|
| Permittee as filed | City of Ann Arbor |
| NPDES ID | MIG081310 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | May 19, 2026 |
| Expiration date | April 1, 2030 |
| Issuing agency | State |
| Address | Ann Arbor, MI 48104 |
| Receiving water | Huron River |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Barton Pond-Huron River (HUC 040900050309) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 17Pollutants on file
- 17Under 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 |
|---|---|---|---|---|---|
| Toluene | 3 | 0 | 0 | ||
| Benzene | 3 | 0 | 0 | ||
| Ethylbenzene | 3 | 0 | 0 | ||
| Tetrachloroethylene | 3 | 0 | 0 | ||
| 1,1-Dichloroethylene | 3 | 0 | 0 | ||
| trans-1,2-Dichloroethylene | 3 | 0 | 0 | ||
| Vinyl chloride | 3 | 0 | 0 | ||
| Trichloroethylene | 3 | 0 | 0 | ||
| Xylenes [total], dry weight | 3 | 0 | 0 | ||
| cis-1,2-Dichloroethene | 3 | 0 | 0 | ||
| pH | 2 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 0 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 0 | 0 | ||
| Benzene, ethylbenzene, toluene, xylene combination | 1 | 0 | 0 | ||
| Equipment inspection - visual | 1 | 0 | 0 | ||
| 1,4-Dioxane | 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 MIG081310.
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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MIG081310.
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, MIG081310.
Start the watch
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- One watershed — $2,990/year
- One state — $4,990/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 MIG081310 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 September 15, 2026.