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City of Wyandotte Municipal Services

Electric Services, major discharger, Wyandotte, Michigan. NPDES permit MI0038105, in force until Oct 1, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 21 days after each period: outfall 001 form A monthly (23 values), outfall 001 form B monthly (1 value), outfall 003 form A monthly (2 values), outfall 003 form B monthly (1 value), outfall 003 form C monthly (1 value), outfall 004 form A monthly (23 values), and 1 more form
Renewal application due
Apr 4, 2027 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 84 reports late

Limits in force (57)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year001
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year001
Thermal Dischargedaily maximumreport only (MBTU/hr)all year001
Thermal Dischargedaily maximum= 244 MBTU/hrall year001
pHdaily minimum≥ 6.5 SUall year001
pHdaily maximum≤ 9 SUall year001
Benzidinemonthly average= .2 ug/Lall year001
Benzidinedaily maximumreport only (ug/L)all year001
Benzidinemonthly average= .1 lb/dall year001
Benzidinedaily maximumreport only (lb/d)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residualdaily maximum≤ 38 ug/Lall year001
Chlorine, total residualinstantaneous maximum= 300 ug/Lall year001
Chlorine, total residualdaily maximum≤ 200 ug/Lall year001
Mercury, total [as Hg]monthly averagereport only (ng/L)all year001
Mercury, total [as Hg]daily maximumreport only (ng/L)all year001
Mercury, total [as Hg]monthly averagereport only (lb/d)all year001
Mercury, total [as Hg]daily maximumreport only (lb/d)all year001
Mercury, total [as Hg]12-month average≤ 3 ng/Lall year001
Mercury, total [as Hg]12-month average≤ .0014 lb/dall year001
Chlorination durationdaily maximumreport only (min/d)all year001
Chlorination durationdaily maximum= 160 min/dall year001
Outfall observation,visual, y/n responsevaluereport only (N=0;Y=1)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year003
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year003
Utilization rateannual averagereport only (%)all year003
Utilization rateannual averagereport only (%)all year003
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year004
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year004
Thermal Dischargedaily maximumreport only (MBTU/hr)all year004
pHdaily minimum≥ 6.5 SUall year004
pHdaily maximum≤ 9 SUall year004
Solids, total suspendedmonthly average≤ 30 mg/Lall year004
Solids, total suspendeddaily maximum≤ 100 mg/Lall year004
Oil & Greasemonthly average≤ 15 mg/Lall year004
Oil & Greasedaily maximum≤ 20 mg/Lall year004
Benzidinemonthly average= .3 ug/Lall year004
Benzidinedaily maximumreport only (ug/L)all year004
Benzidinemonthly average= .1 lb/dall year004
Benzidinedaily maximumreport only (lb/d)all year004
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year004
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year004
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year004
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year004
Chlorine, total residualdaily maximum≤ 38 ug/Lall year004
Chlorine, total residualinstantaneous maximum= 300 ug/Lall year004
Chlorine, total residualdaily maximum≤ 200 ug/Lall year004
Mercury, total [as Hg]monthly averagereport only (ng/L)all year004
Mercury, total [as Hg]daily maximumreport only (ng/L)all year004
Mercury, total [as Hg]monthly averagereport only (lb/d)all year004
Mercury, total [as Hg]daily maximumreport only (lb/d)all year004
Mercury, total [as Hg]12-month average≤ 3 ng/Lall year004
Mercury, total [as Hg]12-month average≤ .00087 lb/dall year004
Chlorination durationdaily maximumreport only (min/d)all year004
Chlorination durationdaily maximum= 160 min/dall year004
Outfall observation,visual, y/n responsevaluereport only (N=0;Y=1)all year004

How strict are these limits?

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/MI0038105 · MCP: https://passage-data.com/mcp