Minnesota Minimum Standards for Point Source
Wastewater Discharges of Sewage

MPCA wastewater website

Minimum Effluent Limitations for Secondary Treatment

Substance or characteristic Limiting concentration or range
5 day CBOD (CBOD5) 25 mg/L
Fecal coliform organisms * 200 organisms/100 mL
Total suspended solids 30 mg/L
pH range 6.0 - 9.0 SU
Phosphorus ** 1 mg/L

Wisconsin

WI DNR Wastewater Permits