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Sewage treatment plant, major discharger, Detroit, Michigan. NPDES permit MI0022802, in force until Oct 1, 2027. Last 12 months: over a limit 5 times (last April 2026), 4 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| December 2025 | Mercury, total [as Hg], 12-month average | 52 | ≤ 25 ng/L | 108% |
| March 2026 | Chlorine, total residual, daily maximum | .33 | ≤ .11 mg/L | 200% |
| March 2026 | Coliform, fecal general, 7-day geometric mean | 690 | ≤ 400 #/100mL | 73% |
| March 2026 | Mercury, total [as Hg], 12-month average | 52 | ≤ 25 ng/L | 108% |
| April 2026 | Mercury, total [as Hg], 12-month average | 52 | ≤ 25 ng/L | 108% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | daily minimum | report only (mg/L) | all year | 049 |
| pH | daily minimum | ≥ 6 SU | all year | 049 |
| pH | daily minimum | ≥ 6 SU | all year | 049 |
| pH | daily maximum | ≤ 9 SU | all year | 049 |
| pH | daily maximum | ≤ 9 SU | all year | 049 |
| Solids, total suspended | monthly average | ≤ 70 mg/L | all year | 049 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 049 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 049 |
| Solids, total suspended | 7-day average | ≤ 45 mg/L | all year | 049 |
| Solids, total suspended | monthly average | ≤ 233000 lb/d | all year | 049 |
| Solids, total suspended | 7-day average | ≤ 349000 lb/d | all year | 049 |
| Oil & Grease | 7-day average | ≤ 15 mg/L | all year | 049 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 049 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 049 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 049 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 049 |
| Phosphorus, total [as P] | monthly average | ≤ 1.5 mg/L | all year | 049 |
| Phosphorus, total [as P] | monthly average | ≤ .7 mg/L | all year | 049 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 049 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 049 |
| Phosphorus, total [as P] | monthly average | ≤ 5400 lb/d | all year | 049 |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | all year | 049 |
| Phosphorus, total [as P] | single sample | ≤ .6 mg/L | Oct | 049 |
| Phosphorus, total [as P] | single sample | ≤ 4600 lb/d | Oct | 049 |
| Chloride [as Cl] | daily maximum | report only (mg/L) | all year | 049 |
| Sulfate, total [as SO4] | daily maximum | report only (mg/L) | all year | 049 |
| Copper, total [as Cu] | daily maximum | ≤ 40 ug/L | all year | 049 |
| Copper, total [as Cu] | daily maximum | ≤ 310 lb/d | all year | 049 |
| Selenium, total [as Se] | monthly average | ≤ 61 ug/L | all year | 049 |
| Selenium, total [as Se] | daily maximum | report only (ug/L) | all year | 049 |
| Selenium, total [as Se] | monthly average | ≤ 470 lb/d | all year | 049 |
| Selenium, total [as Se] | daily maximum | report only (lb/d) | all year | 049 |
| Cyanide [A] | daily maximum | report only (ug/L) | all year | 049 |
| Polychlorinated biphenyls [PCBs] | maximum value | < .1 ug/L | all year | 049 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 049 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 049 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 049 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 049 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 049 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 049 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 049 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 049 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 049 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 049 |
| Chlorine, total residual | daily maximum | ≤ .11 mg/L | all year | 049 |
| Toxicity [acute], Ceriodaphnia dubia | daily maximum | report only (tox acute) | all year | 049 |
| Mercury, total [as Hg] | monthly average | report only (ng/L) | all year | 049 |
| Mercury, total [as Hg] | monthly average | report only (ng/L) | all year | 049 |
| Mercury, total [as Hg] | daily maximum | report only (ng/L) | all year | 049 |
| Mercury, total [as Hg] | daily maximum | report only (ng/L) | all year | 049 |
| Mercury, total [as Hg] | monthly average | report only (lb/d) | all year | 049 |
| Mercury, total [as Hg] | monthly average | report only (lb/d) | all year | 049 |
| Mercury, total [as Hg] | daily maximum | report only (lb/d) | all year | 049 |
| Mercury, total [as Hg] | daily maximum | report only (lb/d) | all year | 049 |
| Mercury, total [as Hg] | 12-month average | ≤ 25 ng/L | all year | 049 |
| Mercury, total [as Hg] | 12-month average | ≤ 3 ng/L | all year | 049 |
| Mercury, total [as Hg] | 12-month average | ≤ .16 lb/d | all year | 049 |
| Mercury, total [as Hg] | 12-month average | ≤ .023 lb/d | all year | 049 |
| Coliform, fecal general | monthly geometric mean | ≤ 200 #/100mL | all year | 049 |
| Coliform, fecal general | 7-day geometric mean | ≤ 400 #/100mL | all year | 049 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 40 mg/L | all year | 049 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 25 mg/L | all year | 049 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | all year | 049 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | all year | 049 |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 40 mg/L | all year | 049 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 194000 lb/d | all year | 049 |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 310000 lb/d | all year | 049 |
| BOD, carb-5 day, 20 deg C, percent removal | minimum | ≥ 85 % | all year | 049 |
| BOD, carb-5 day, 20 deg C, percent removal | daily minimum | report only (%) | all year | 049 |
| Solids, suspended percent removal | minimum | ≥ 85 % | all year | 049 |
| Solids, suspended percent removal | daily minimum | report only (%) | all year | 049 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 3 mg/L | all year | 050 |
| pH | daily minimum | ≥ 6 SU | all year | 050 |
| pH | daily maximum | ≤ 9 SU | all year | 050 |
| Oil & Grease | 7-day average | ≤ 15 mg/L | all year | 050 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 050 |
| Chloride [as Cl] | daily maximum | report only (mg/L) | all year | 050 |
| Sulfate, total [as SO4] | daily maximum | report only (mg/L) | all year | 050 |
| Cadmium, total [as Cd] | monthly average | ≤ 3.1 ug/L | all year | 050 |
| Cadmium, total [as Cd] | daily maximum | report only (ug/L) | all year | 050 |
| Cadmium, total [as Cd] | monthly average | ≤ 21 lb/d | all year | 050 |
| Cadmium, total [as Cd] | daily maximum | report only (lb/d) | all year | 050 |
| Copper, total [as Cu] | daily maximum | report only (ug/L) | all year | 050 |
| Antimony, total [as Sb] | monthly average | ≤ 2.1 ug/L | all year | 050 |
| Antimony, total [as Sb] | daily maximum | report only (ug/L) | all year | 050 |
| Antimony, total [as Sb] | monthly average | ≤ 15 lb/d | all year | 050 |
| Antimony, total [as Sb] | daily maximum | report only (lb/d) | all year | 050 |
| Cyanide [A] | daily maximum | report only (ug/L) | all year | 050 |
| Toxicity, choice of species | monthly average | ≤ 1.2 tox chronic | all year | 050 |
| Toxicity, choice of species | value | report only (tox chronic) | all year | 050 |
| Bromomethane | monthly average | ≤ 5.1 ug/L | all year | 050 |
| Bromomethane | daily maximum | report only (ug/L) | all year | 050 |
| Bromomethane | monthly average | ≤ 35 lb/d | all year | 050 |
| Bromomethane | daily maximum | report only (lb/d) | all year | 050 |
| Polychlorinated biphenyls [PCBs] | maximum value | < .1 ug/L | all year | 050 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 050 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 050 |
| Chlorine, total residual | daily maximum | ≤ 38 ug/L | all year | 050 |
| Toxicity [acute], Ceriodaphnia dubia | daily maximum | ≤ 1 tox acute | all year | 050 |
| Coliform, fecal general | monthly geometric mean | ≤ 200 #/100mL | all year | 050 |
| Coliform, fecal general | 7-day geometric mean | ≤ 400 #/100mL | all year | 050 |
| TU Static 24 Hr Acute Pimephales promelas | daily maximum | ≤ 1 tox acute | all year | 050 |
| Static 48 Hr Chronic Pimphales Promelas | monthly average | ≤ 1.2 tox chronic | all year | 050 |
| Static 48 Hr Chronic Pimphales Promelas | value | report only (tox chronic) | all year | 050 |
| Oxygen, dissolved [DO] | daily minimum | report only (mg/L) | all year | 101 |
| pH | daily minimum | report only (SU) | all year | 101 |
| pH | maximum | report only (SU) | all year | 101 |
| Solids, total suspended | maximum | report only (mg/L) | all year | 101 |
| Nitrogen, ammonia total [as N] | maximum | report only (mg/L) | all year | 101 |
| Phosphorus, total [as P] | maximum | report only (mg/L) | all year | 101 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 101 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 101 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 101 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 101 |
| Chlorine, total residual | average value | report only (mg/L) | all year | 101 |
| Chlorine, total residual | maximum | report only (mg/L) | all year | 101 |
| Coliform, fecal general | maximum | ≤ 400 #/100mL | May–Oct | 101 |
| Coliform, fecal general | maximum | ≤ 1000 #/100mL | Jan, Feb, Mar, Apr, Nov, Dec | 101 |
| BOD, carbonaceous [5 day, 20 C] | maximum | report only (mg/L) | all year | 101 |
| Oxygen, dissolved [DO] | daily minimum | report only (mg/L) | all year | 102 |
| pH | daily minimum | report only (SU) | all year | 102 |
| pH | maximum | report only (SU) | all year | 102 |
| Solids, total suspended | maximum | report only (mg/L) | all year | 102 |
| Nitrogen, ammonia total [as N] | maximum | report only (mg/L) | all year | 102 |
| Phosphorus, total [as P] | maximum | report only (mg/L) | all year | 102 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 102 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 102 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 102 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 102 |
| Chlorine, total residual | average value | report only (mg/L) | all year | 102 |
| Chlorine, total residual | maximum | report only (mg/L) | all year | 102 |
| Coliform, fecal general | maximum | ≤ 400 #/100mL | May–Oct | 102 |
| Coliform, fecal general | maximum | ≤ 1000 #/100mL | Jan, Feb, Mar, Apr, Nov, Dec | 102 |
| BOD, carbonaceous [5 day, 20 C] | maximum | report only (mg/L) | all year | 102 |
| Oxygen, dissolved [DO] | daily minimum | report only (mg/L) | all year | 103 |
| pH | daily minimum | report only (SU) | all year | 103 |
| pH | maximum | report only (SU) | all year | 103 |
| Solids, total suspended | maximum | report only (mg/L) | all year | 103 |
| Nitrogen, ammonia total [as N] | maximum | report only (mg/L) | all year | 103 |
| Phosphorus, total [as P] | maximum | report only (mg/L) | all year | 103 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 103 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 103 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 103 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 103 |
| Chlorine, total residual | average value | report only (mg/L) | all year | 103 |
| Chlorine, total residual | maximum | report only (mg/L) | all year | 103 |
| Coliform, fecal general | maximum | ≤ 400 #/100mL | May–Oct | 103 |
| Coliform, fecal general | maximum | ≤ 1000 #/100mL | Jan, Feb, Mar, Apr, Nov, Dec | 103 |
| BOD, carbonaceous [5 day, 20 C] | maximum | report only (mg/L) | all year | 103 |
| Oxygen, dissolved [DO] | daily minimum | report only (mg/L) | all year | 104 |
| pH | daily minimum | report only (SU) | all year | 104 |
| pH | maximum | report only (SU) | all year | 104 |
| Solids, total suspended | maximum | report only (mg/L) | all year | 104 |
| Nitrogen, ammonia total [as N] | maximum | report only (mg/L) | all year | 104 |
| Phosphorus, total [as P] | maximum | report only (mg/L) | all year | 104 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 104 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 104 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 104 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 104 |
| Chlorine, total residual | average value | report only (mg/L) | all year | 104 |
| Chlorine, total residual | maximum | report only (mg/L) | all year | 104 |
| Coliform, fecal general | maximum | ≤ 400 #/100mL | May–Oct | 104 |
| Coliform, fecal general | maximum | ≤ 1000 #/100mL | Jan, Feb, Mar, Apr, Nov, Dec | 104 |
| BOD, carbonaceous [5 day, 20 C] | maximum | report only (mg/L) | all year | 104 |
| Oxygen, dissolved [DO] | daily minimum | report only (mg/L) | all year | 105 |
| pH | daily minimum | report only (SU) | all year | 105 |
| pH | maximum | report only (SU) | all year | 105 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 105 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 105 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 105 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 105 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 105 |
| Chlorine, total residual | average value | report only (mg/L) | all year | 105 |
| Chlorine, total residual | maximum | report only (mg/L) | all year | 105 |
| Coliform, fecal general | maximum | ≤ 1000 #/100mL | Jan, Feb, Mar, Apr, Nov, Dec | 105 |
| Coliform, fecal general | maximum | ≤ 400 #/100mL | May–Oct | 105 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | all year | 105 |
| Oxygen, dissolved [DO] | daily minimum | report only (mg/L) | all year | 106 |
| pH | daily minimum | report only (SU) | all year | 106 |
| pH | maximum | report only (SU) | all year | 106 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 106 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 106 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 106 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 106 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 106 |
| Chlorine, total residual | average value | report only (mg/L) | all year | 106 |
| Chlorine, total residual | maximum | report only (mg/L) | all year | 106 |
| Coliform, fecal general | maximum | ≤ 1000 #/100mL | Jan, Feb, Mar, Apr, Nov, Dec | 106 |
| Coliform, fecal general | maximum | ≤ 400 #/100mL | May–Oct | 106 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | all year | 106 |
| Oxygen, dissolved [DO] | daily minimum | report only (mg/L) | all year | 107 |
| pH | daily minimum | report only (SU) | all year | 107 |
| pH | maximum | report only (SU) | all year | 107 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 107 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 107 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 107 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 107 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 107 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 107 |
| Chlorine, total residual | average value | report only (mg/L) | all year | 107 |
| Chlorine, total residual | maximum | report only (mg/L) | all year | 107 |
| Coliform, fecal general | maximum | ≤ 400 #/100mL | May–Oct | 107 |
| Coliform, fecal general | maximum | ≤ 1000 #/100mL | Jan, Feb, Mar, Apr, Nov, Dec | 107 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | all year | 107 |
| Oxygen, dissolved [DO] | daily minimum | report only (mg/L) | all year | 108 |
| pH | daily minimum | report only (SU) | all year | 108 |
| pH | maximum | report only (SU) | all year | 108 |
| Solids, total suspended | maximum | report only (mg/L) | all year | 108 |
| Nitrogen, ammonia total [as N] | maximum | report only (mg/L) | all year | 108 |
| Phosphorus, total [as P] | maximum | report only (mg/L) | all year | 108 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 108 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 108 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 108 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 108 |
| Chlorine, total residual | average value | report only (mg/L) | all year | 108 |
| Chlorine, total residual | maximum | report only (mg/L) | all year | 108 |
| Coliform, fecal general | maximum | ≤ 400 #/100mL | May–Oct | 108 |
| Coliform, fecal general | maximum | ≤ 1000 #/100mL | Jan, Feb, Mar, Apr, Nov, Dec | 108 |
| BOD, carbonaceous [5 day, 20 C] | maximum | report only (mg/L) | all year | 108 |
| Oxygen, dissolved [DO] | daily minimum | report only (mg/L) | all year | 109 |
| pH | daily minimum | report only (SU) | all year | 109 |
| pH | maximum | report only (SU) | all year | 109 |
| Solids, total suspended | maximum | report only (mg/L) | all year | 109 |
| Oil & Grease | maximum | report only (mg/L) | all year | 109 |
| Nitrogen, ammonia total [as N] | maximum | report only (mg/L) | all year | 109 |
| Phosphorus, total [as P] | maximum | report only (mg/L) | all year | 109 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 109 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 109 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 109 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 109 |
| Chlorine, total residual | average value | report only (mg/L) | all year | 109 |
| Chlorine, total residual | maximum | report only (mg/L) | all year | 109 |
| Coliform, fecal general | maximum | ≤ 400 #/100mL | May–Oct | 109 |
| Coliform, fecal general | maximum | ≤ 1000 #/100mL | Jan, Feb, Mar, Apr, Nov, Dec | 109 |
| BOD, carbonaceous [5 day, 20 C] | maximum | report only (mg/L) | all year | 109 |
| Solids, total | monthly minimum | report only (%) | all year | SLD |
| Solids, total | monthly average | report only (%) | all year | SLD |
| Solids, total | monthly maximum | report only (%) | all year | SLD |
| Arsenic, dry weight | monthly minimum | report only (mg/kg) | all year | SLD |
| Arsenic, dry weight | monthly average | report only (mg/kg) | all year | SLD |
| Arsenic, dry weight | monthly maximum | ≤ 75 mg/kg | all year | SLD |
| Selenium, dry weight | monthly minimum | report only (mg/kg) | all year | SLD |
| Selenium, dry weight | monthly average | report only (mg/kg) | all year | SLD |
| Selenium, dry weight | monthly maximum | ≤ 100 mg/kg | all year | SLD |
| Copper, dry weight | monthly minimum | report only (mg/kg) | all year | SLD |
| Copper, dry weight | monthly average | report only (mg/kg) | all year | SLD |
| Copper, dry weight | monthly maximum | ≤ 4300 mg/kg | all year | SLD |
| Cadmium, dry weight | monthly minimum | report only (mg/kg) | all year | SLD |
| Cadmium, dry weight | monthly average | report only (mg/kg) | all year | SLD |
| Cadmium, dry weight | monthly maximum | ≤ 85 mg/kg | all year | SLD |
| Nitrogen, total Kjeldahl | monthly minimum | report only (mg/kg) | all year | SLD |
| Nitrogen, total Kjeldahl | monthly average | report only (mg/kg) | all year | SLD |
| Nitrogen, total Kjeldahl | monthly maximum | report only (mg/kg) | all year | SLD |
| Molybdenum, sludge, total, dry weight [as Mo] | monthly minimum | report only (mg/kg) | all year | SLD |
| Molybdenum, sludge, total, dry weight [as Mo] | monthly average | report only (mg/kg) | all year | SLD |
| Molybdenum, sludge, total, dry weight [as Mo] | monthly maximum | ≤ 75 mg/kg | all year | SLD |
| Zinc, sludge, total, dry weight [as Zn] | monthly minimum | report only (mg/kg) | all year | SLD |
| Zinc, sludge, total, dry weight [as Zn] | monthly average | report only (mg/kg) | all year | SLD |
| Zinc, sludge, total, dry weight [as Zn] | monthly maximum | ≤ 7500 mg/kg | all year | SLD |
| Lead, sludge, total, dry weight [as Pb] | monthly minimum | report only (mg/kg) | all year | SLD |
| Lead, sludge, total, dry weight [as Pb] | monthly average | report only (mg/kg) | all year | SLD |
| Lead, sludge, total, dry weight [as Pb] | monthly maximum | ≤ 840 mg/kg | all year | SLD |
| Nickel, sludge, total, dry weight [as Ni] | monthly minimum | report only (mg/kg) | all year | SLD |
| Nickel, sludge, total, dry weight [as Ni] | monthly average | report only (mg/kg) | all year | SLD |
| Nickel, sludge, total, dry weight [as Ni] | monthly maximum | ≤ 420 mg/kg | all year | SLD |
| Nitrogen, sludge, total, dry weight [as N] | monthly minimum | report only (mg/kg) | all year | SLD |
| Nitrogen, sludge, total, dry weight [as N] | monthly average | report only (mg/kg) | all year | SLD |
| Nitrogen, sludge, total, dry weight [as N] | monthly maximum | report only (mg/kg) | all year | SLD |
| Mercury, sludge, total, dry weight [as Hg] | monthly minimum | report only (mg/kg) | all year | SLD |
| Mercury, sludge, total, dry weight [as Hg] | monthly average | report only (mg/kg) | all year | SLD |
| Mercury, sludge, total, dry weight [as Hg] | monthly maximum | ≤ 57 mg/kg | all year | SLD |
| Potassium, sludge, total, dry weight [as K] | monthly minimum | report only (mg/kg) | all year | SLD |
| Potassium, sludge, total, dry weight [as K] | monthly average | report only (mg/kg) | all year | SLD |
| Potassium, sludge, total, dry weight [as K] | monthly maximum | report only (mg/kg) | all year | SLD |
| Phosphorus, sludge, total, dry weight [as P] | monthly minimum | report only (mg/kg) | all year | SLD |
| Phosphorus, sludge, total, dry weight [as P] | monthly average | report only (mg/kg) | all year | SLD |
| Phosphorus, sludge, total, dry weight [as P] | monthly maximum | report only (mg/kg) | all year | SLD |
Cited limits by parameter: Michigan's rules and the federal ones.
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