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Electric Services, Dearborn, Michigan. NPDES permit MI0056235 expired Oct 1, 2016; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 004 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 004 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 004 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 004 |
| pH | daily minimum | ≥ 6.5 SU | all year | 004 |
| pH | daily maximum | ≤ 9 SU | all year | 004 |
| Phosphorus, total [as P] | daily maximum | ≤ 1 mg/L | all year | 004 |
| Phosphorus, total [as P] | monthly average | ≤ 9.2 lb/d | all year | 004 |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | all year | 004 |
| Copper, total [as Cu] | monthly average | report only (ug/L) | all year | 004 |
| Copper, total [as Cu] | daily maximum | report only (ug/L) | all year | 004 |
| Copper, total [as Cu] | monthly average | report only (lb/d) | all year | 004 |
| Copper, total [as Cu] | daily maximum | report only (lb/d) | all year | 004 |
| Thallium, total [as Tl] | monthly average | report only (ug/L) | all year | 004 |
| Thallium, total [as Tl] | daily maximum | report only (ug/L) | all year | 004 |
| Thallium, total [as Tl] | monthly average | report only (lb/d) | all year | 004 |
| Thallium, total [as Tl] | daily maximum | report only (lb/d) | all year | 004 |
| Cyanide [A] | monthly average | ≤ 5.6 ug/L | all year | 004 |
| Cyanide [A] | daily maximum | ≤ 44 ug/L | all year | 004 |
| Cyanide [A] | monthly average | ≤ 11 lb/d | all year | 004 |
| Cyanide [A] | daily maximum | ≤ 88 lb/d | all year | 004 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 004 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 004 |
| Chlorine, total residual | weekly geometric mean | ≤ 38 ug/L | all year | 004 |
| Chlorine, total residual | daily maximum | ≤ 200 ug/L | all year | 004 |
| Chlorine, total residual | instantaneous maximum | ≤ 300 ug/L | all year | 004 |
| Mercury, total [as Hg] | monthly average | report only (ng/L) | all year | 004 |
| Mercury, total [as Hg] | daily maximum | report only (ng/L) | all year | 004 |
| Mercury, total [as Hg] | monthly average | report only (lb/d) | all year | 004 |
| Mercury, total [as Hg] | daily maximum | report only (lb/d) | all year | 004 |
| Mercury, total [as Hg] | 12-month average | ≤ 9 ng/L | all year | 004 |
| Mercury, total [as Hg] | 12-month average | ≤ .018 lb/d | all year | 004 |
| Chlorination duration | daily maximum | ≤ 160 min/d | all year | 004 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 006 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 006 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 006 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 006 |
| pH | daily minimum | ≥ 6.5 SU | all year | 006 |
| pH | daily maximum | ≤ 9 SU | all year | 006 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 006 |
| Solids, total suspended | daily maximum | ≤ 100 mg/L | all year | 006 |
| Oil & Grease | monthly average | ≤ 15 mg/L | all year | 006 |
| Oil & Grease | daily maximum | ≤ 20 mg/L | all year | 006 |
| Phosphorus, total [as P] | daily maximum | ≤ 1 mg/L | all year | 006 |
| Phosphorus, total [as P] | monthly average | ≤ 9.2 lb/d | all year | 006 |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | all year | 006 |
| Copper, total [as Cu] | monthly average | report only (ug/L) | all year | 006 |
| Copper, total [as Cu] | daily maximum | report only (ug/L) | all year | 006 |
| Copper, total [as Cu] | monthly average | report only (lb/d) | all year | 006 |
| Copper, total [as Cu] | daily maximum | report only (lb/d) | all year | 006 |
| Thallium, total [as Tl] | monthly average | report only (ug/L) | all year | 006 |
| Thallium, total [as Tl] | daily maximum | report only (ug/L) | all year | 006 |
| Thallium, total [as Tl] | monthly average | report only (lb/d) | all year | 006 |
| Thallium, total [as Tl] | daily maximum | report only (lb/d) | all year | 006 |
| Cyanide [A] | monthly average | ≤ 5.6 ug/L | all year | 006 |
| Cyanide [A] | daily maximum | ≤ 44 ug/L | all year | 006 |
| Cyanide [A] | monthly average | ≤ 11 lb/d | all year | 006 |
| Cyanide [A] | daily maximum | ≤ 88 lb/d | all year | 006 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 006 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 006 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 006 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 006 |
| Chlorine, total residual | daily maximum | ≤ 38 ug/L | all year | 006 |
| Chlorine, total residual | daily maximum | ≤ 200 ug/L | all year | 006 |
| Chlorine, total residual | daily maximum | ≤ 300 ug/L | all year | 006 |
| Mercury, total [as Hg] | monthly average | report only (ng/L) | all year | 006 |
| Mercury, total [as Hg] | daily maximum | report only (ng/L) | all year | 006 |
| Mercury, total [as Hg] | monthly average | report only (lb/d) | all year | 006 |
| Mercury, total [as Hg] | daily maximum | report only (lb/d) | all year | 006 |
| Mercury, total [as Hg] | 12-month average | ≤ 9 ng/L | all year | 006 |
| Mercury, total [as Hg] | 12-month average | ≤ .018 lb/d | all year | 006 |
| Chlorination duration | daily maximum | ≤ 160 min/d | all year | 006 |
Cited limits by parameter: Michigan's rules and the federal ones.
Same industry: the 27 Electric Services permits in Michigan.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/MI0056235 · MCP: https://passage-data.com/mcp