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MWC, LLC

Cheese, Natural And Processed, St. John, Michigan. NPDES permit MI0060257 expired Oct 1, 2023; its limits still apply. 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 (41 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 1 of 12 reports late

Limits in force (65)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily minimum= 6 mg/Lall year
pHdaily minimum= 6.5 SUall year
pHdaily maximum= 9 SUall year
Solids, total suspendedmonthly average= 20 mg/Lall year
Solids, total suspendeddaily maximum= 30 mg/Lall year
Solids, total suspendedmonthly average= 160 lb/dall year
Solids, total suspendeddaily maximum= 300 lb/dall year
Nitrogen, ammonia total [as N]monthly average= .5 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Jan, Feb, Mar, Dec
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Apr
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Nov
Nitrogen, ammonia total [as N]daily maximum= 2 mg/LMay–Oct
Nitrogen, ammonia total [as N]daily maximum= 10 mg/LJan, Feb, Mar, Dec
Nitrogen, ammonia total [as N]daily maximum= 4.9 mg/LApr
Nitrogen, ammonia total [as N]daily maximum= 5.7 mg/LNov
Nitrogen, ammonia total [as N]monthly average= 10 lb/dMay–Oct
Nitrogen, ammonia total [as N]monthly averagereport only (lb/d)Jan, Feb, Mar, Dec
Nitrogen, ammonia total [as N]monthly averagereport only (lb/d)Apr
Nitrogen, ammonia total [as N]monthly averagereport only (lb/d)Nov
Nitrogen, ammonia total [as N]daily maximum= 40 lb/dMay–Oct
Nitrogen, ammonia total [as N]daily maximum= 200 lb/dJan, Feb, Mar, Dec
Nitrogen, ammonia total [as N]daily maximum= 100 lb/dApr
Nitrogen, ammonia total [as N]daily maximum= 110 lb/dNov
Phosphorus, total [as P]monthly average= .5 mg/Lall year
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]monthly average= 10 lb/dall year
Phosphorus, total [as P]daily maximumreport only (lb/d)all year
Chloride [as Cl]monthly averagereport only (mg/L)all year
Chloride [as Cl]daily maximumreport only (mg/L)all year
Chloride [as Cl]monthly averagereport only (lb/d)all year
Chloride [as Cl]daily maximumreport only (lb/d)all year
Sulfate, total [as SO4]monthly averagereport only (mg/L)all year
Sulfate, total [as SO4]daily maximumreport only (mg/L)all year
Sulfate, total [as SO4]monthly averagereport only (lb/d)all year
Sulfate, total [as SO4]daily maximumreport only (lb/d)all year
Toxicity, choice of speciesmonthly averagereport only (tox chronic)all year
Toxicity, choice of speciesvaluereport only (tox chronic)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
Toxicity [acute], Ceriodaphnia dubiadaily maximumreport only (tox acute)all year
Solids, total dissolvedmonthly averagereport only (mg/L)all year
Solids, total dissolveddaily maximumreport only (mg/L)all year
Solids, total dissolvedmonthly averagereport only (lb/d)all year
Solids, total dissolveddaily maximumreport only (lb/d)all year
BOD, carbonaceous [5 day, 20 C]monthly average= 13 mg/LApr
BOD, carbonaceous [5 day, 20 C]monthly average= 4 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average= 22 mg/LJan, Feb, Mar, Dec
BOD, carbonaceous [5 day, 20 C]monthly average= 13 mg/LNov
BOD, carbonaceous [5 day, 20 C]daily maximum= 20 mg/LApr
BOD, carbonaceous [5 day, 20 C]daily maximum= 10 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]daily maximum= 33 mg/LJan, Feb, Mar, Dec
BOD, carbonaceous [5 day, 20 C]daily maximum= 19 mg/LNov
BOD, carbonaceous [5 day, 20 C]monthly average= 130 lb/dApr
BOD, carbonaceous [5 day, 20 C]monthly average= 80 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average= 130 lb/dJan, Feb, Mar, Dec
BOD, carbonaceous [5 day, 20 C]monthly average= 130 lb/dNov
BOD, carbonaceous [5 day, 20 C]daily maximum= 260 lb/dApr
BOD, carbonaceous [5 day, 20 C]daily maximum= 200 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]daily maximum= 260 lb/dJan, Feb, Mar, Dec
BOD, carbonaceous [5 day, 20 C]daily maximum= 260 lb/dNov
Outfall observation,visual, y/n responsevaluereport only (N=0;Y=1)all year
TU Static 24 Hr Acute Pimephales promelasdaily maximumreport only (tox acute)all year
Static 48 Hr Chronic Pimphales Promelasmonthly averagereport only (tox chronic)all year
Static 48 Hr Chronic Pimphales Promelasvaluereport only (tox chronic)all year

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

Same industry: the 26 Food and Kindred Products 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/MI0060257 · MCP: https://passage-data.com/mcp