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City of Grant

Sewage treatment plant, Grant, Michigan. NPDES permit MI0023035, in force until Oct 1, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 21 days after each period: form A monthly (18 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 13 reports late

Limits in force (32)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily minimum≥ 7 mg/LMay–Sep
Oxygen, dissolved [DO]daily minimum≥ 6.5 mg/LOct, Nov
Oxygen, dissolved [DO]daily minimum≥ 6 mg/LJan, Feb, Mar, Apr, Dec
pHdaily minimum≥ 6.5 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, Dec
Solids, total suspendedmonthly average≤ 20 mg/LMay–Nov
Solids, total suspended7-day average≤ 45 mg/LJan, Feb, Mar, Apr, Dec
Solids, total suspended7-day average≤ 30 mg/LMay–Nov
Solids, total suspendedmonthly average≤ 38 lb/dJan, Feb, Mar, Apr, Dec
Solids, total suspendedmonthly average≤ 26 lb/dMay–Nov
Solids, total suspended7-day average≤ 57 lb/dJan, Feb, Mar, Apr, Dec
Solids, total suspended7-day average≤ 38 lb/dMay–Nov
Phosphorus, total [as P]monthly average≤ 1 mg/LMay–Nov
Phosphorus, total [as P]monthly average≤ 1 mg/LJan, Feb, Mar, Apr, Dec
Phosphorus, total [as P]daily maximumreport only (mg/L)May–Nov
Phosphorus, total [as P]daily maximumreport only (mg/L)Jan, Feb, Mar, Apr, Dec
Phosphorus, total [as P]monthly average≤ .83 lb/dMay–Nov
Phosphorus, total [as P]monthly average≤ 1.3 lb/dJan, Feb, Mar, Apr, Dec
Phosphorus, total [as P]daily maximumreport only (lb/d)May–Nov
Phosphorus, total [as P]daily maximumreport only (lb/d)Jan, Feb, Mar, Apr, Dec
Chloride [as Cl]daily maximumreport only (mg/L)all year
Sulfate, total [as SO4]daily maximumreport only (mg/L)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualdaily maximum≤ 38 ug/Lall year
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year
Coliform, fecal general7-day geometric mean≤ 400 #/100mLall year
BOD, carb-5 day, 20 deg C, percent removalminimum≥ 85 %Jan, Feb, Mar, Apr, Dec
BOD, carb-5 day, 20 deg C, percent removaldaily minimumreport only (%)Jan, Feb, Mar, Apr, Dec
Solids, suspended percent removalminimum≥ 85 %Jan, Feb, Mar, Apr, Dec
Solids, suspended percent removaldaily minimumreport only (%)Jan, Feb, Mar, Apr, Dec

How strict are these limits?

Cited limits by parameter: Michigan's rules and the federal ones.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MI0023035 · MCP: https://passage-data.com/mcp