Charter Township of Commerce — NPDES permit MI0025071: limits, due date and EPA's record

NPDES permit MI0025071 · Major POTW · effective, expires 2026-10-01 · EPA's file as of 2026-09-19

EPA's record, 2025-09-01 to 2026-08-31

Reporting

Reports are due about 21 days after each monitoring period ends (the most common figure among MI permits in EPA's filings — check your permit).

Limits in force (91)

Outfall	Parameter	Statistic	Limit	Months
002	Temperature, water deg. fahrenheit	DAILY MN	report only	all year
002	Temperature, water deg. fahrenheit	DAILY MX	report only	all year
002	Oxygen, dissolved [DO]	DAILY MN	>= 7 mg/L	all year
002	pH	DAILY MN	>= 6.5 SU	all year
002	pH	DAILY MX	<= 9 SU	all year
002	Solids, total suspended	MO AVG	<= 20 mg/L	all year
002	Solids, total suspended	7 DA AVG	<= 30 mg/L	all year
002	Solids, total suspended	MO AVG	<= 1400 lb/qtr	all year
002	Solids, total suspended	7 DA AVG	<= 2100 lb/qtr	all year
002	Nitrogen, ammonia total [as N]	MO AVG	<= .5 mg/L	all year
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 2 mg/L	all year
002	Nitrogen, ammonia total [as N]	MO AVG	<= 35 lb/qtr	all year
002	Nitrogen, ammonia total [as N]	7 DA AVG	<= 140 lb/qtr	all year
002	Phosphorus, total [as P]	MO AVG	report only	all year
002	Phosphorus, total [as P]	DAILY MX	report only	all year
002	Phosphorus, total [as P]	MO AVG	report only	all year
002	Phosphorus, total [as P]	DAILY MX	report only	all year
002	Phosphorus, total [as P]	4D	<= .2 mg/L	all year
002	Phosphorus, total [as P]	4D	<= 12 lb/qtr	all year
002	Chloride [as Cl]	MO AVG	report only	all year
002	Chloride [as Cl]	DAILY MX	report only	all year
002	Sulfate, total [as SO4]	MO AVG	report only	all year
002	Sulfate, total [as SO4]	DAILY MX	report only	all year
002	Selenium, total [as Se]	MO AVG	= 5 ug/L	all year
002	Selenium, total [as Se]	DAILY MX	report only	all year
002	Selenium, total [as Se]	MO AVG	= .36 lb/qtr	all year
002	Selenium, total [as Se]	DAILY MX	report only	all year
002	Di[2-ethylhexyl] phthalate [DEHP]	MO AVG	<= 18 ug/L	all year
002	Di[2-ethylhexyl] phthalate [DEHP]	DAILY MX	report only	all year
002	Di[2-ethylhexyl] phthalate [DEHP]	MO AVG	<= 1.3 lb/qtr	all year
002	Di[2-ethylhexyl] phthalate [DEHP]	DAILY MX	report only	all year
002	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
002	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
002	Mercury, total [as Hg]	MO AVG	report only	all year
002	Mercury, total [as Hg]	DAILY MX	report only	all year
002	Mercury, total [as Hg]	MO AVG	report only	all year
002	Mercury, total [as Hg]	DAILY MX	report only	all year
002	Coliform, fecal general	MO GEOMN	<= 200 #/100mL	all year
002	Coliform, fecal general	7 DA GEO	<= 400 #/100mL	all year
002	BOD, carbonaceous [5 day, 20 C]	MO AVG	<= 4 mg/L	all year
002	BOD, carbonaceous [5 day, 20 C]	DAILY MX	<= 10 mg/L	all year
002	BOD, carbonaceous [5 day, 20 C]	MO AVG	<= 280 lb/qtr	all year
002	BOD, carbonaceous [5 day, 20 C]	7 DA AVG	<= 710 lb/qtr	all year
003	Oxygen, dissolved [DO]	DAILY MN	report only	all year
003	Phosphorus, total [as P]	DAILY MX	report only	all year
003	Phosphorus, total [as P]	MO MAX	report only	all year
003	Phosphorus, total [as P]	ANNL MAX	<= 100 lb/yr	all year
003	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
003	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
SLD	Solids, total	MO MIN	report only	all year
SLD	Solids, total	MO AVG	report only	all year
SLD	Solids, total	MO MAX	report only	all year
SLD	Arsenic, dry weight	MO MIN	report only	all year
SLD	Arsenic, dry weight	MO AVG	report only	all year
SLD	Arsenic, dry weight	MO MAX	<= 75 mg/kg	all year
SLD	Selenium, dry weight	MO MIN	report only	all year
SLD	Selenium, dry weight	MO AVG	report only	all year
SLD	Selenium, dry weight	MO MAX	<= 100 mg/kg	all year
SLD	Copper, dry weight	MO MIN	report only	all year
SLD	Copper, dry weight	MO AVG	report only	all year
SLD	Copper, dry weight	MO MAX	<= 4300 mg/kg	all year
SLD	Cadmium, dry weight	MO MIN	report only	all year
SLD	Cadmium, dry weight	MO AVG	report only	all year
SLD	Cadmium, dry weight	MO MAX	<= 85 mg/kg	all year
SLD	Nitrogen, total Kjeldahl	MO MIN	report only	all year
SLD	Nitrogen, total Kjeldahl	MO AVG	report only	all year
SLD	Nitrogen, total Kjeldahl	MO MAX	report only	all year
SLD	Molybdenum, sludge, total, dry weight [as Mo]	MO MIN	report only	all year
SLD	Molybdenum, sludge, total, dry weight [as Mo]	MO AVG	report only	all year
SLD	Molybdenum, sludge, total, dry weight [as Mo]	MO MAX	<= 75 mg/kg	all year
SLD	Zinc, sludge, total, dry weight [as Zn]	MO MIN	report only	all year
SLD	Zinc, sludge, total, dry weight [as Zn]	MO AVG	report only	all year
SLD	Zinc, sludge, total, dry weight [as Zn]	MO MAX	<= 7500 mg/kg	all year
SLD	Lead, sludge, total, dry weight [as Pb]	MO MIN	report only	all year
SLD	Lead, sludge, total, dry weight [as Pb]	MO AVG	report only	all year
SLD	Lead, sludge, total, dry weight [as Pb]	MO MAX	<= 840 mg/kg	all year
SLD	Nickel, sludge, total, dry weight [as Ni]	MO MIN	report only	all year
SLD	Nickel, sludge, total, dry weight [as Ni]	MO AVG	report only	all year
SLD	Nickel, sludge, total, dry weight [as Ni]	MO MAX	<= 420 mg/kg	all year
SLD	Nitrogen, sludge, total, dry weight [as N]	MO MIN	report only	all year
SLD	Nitrogen, sludge, total, dry weight [as N]	MO AVG	report only	all year
SLD	Nitrogen, sludge, total, dry weight [as N]	MO MAX	report only	all year
SLD	Mercury, sludge, total, dry weight [as Hg]	MO MIN	report only	all year
SLD	Mercury, sludge, total, dry weight [as Hg]	MO AVG	report only	all year
SLD	Mercury, sludge, total, dry weight [as Hg]	MO MAX	<= 57 mg/kg	all year
SLD	Potassium, sludge, total, dry weight [as K]	MO MIN	report only	all year
SLD	Potassium, sludge, total, dry weight [as K]	MO AVG	report only	all year
SLD	Potassium, sludge, total, dry weight [as K]	MO MAX	report only	all year
SLD	Phosphorus, sludge, total, dry weight [as P]	MO MIN	report only	all year
SLD	Phosphorus, sludge, total, dry weight [as P]	MO AVG	report only	all year
SLD	Phosphorus, sludge, total, dry weight [as P]	MO MAX	report only	all year