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Industrial or other facility, Shelbyville, Michigan. NPDES permit MI0058670, in force until Dec 15, 2029. Last 12 months: no values over a limit, 1 of 16 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | daily minimum | ≥ 6 mg/L | May–Sep |
| Oxygen, dissolved [DO] | minimum | ≥ 5 mg/L | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| pH | minimum | ≥ 6.5 SU | all year |
| pH | maximum | ≤ 9 SU | all year |
| pH | daily minimum | report only (SU) | all year |
| pH | daily maximum | report only (SU) | all year |
| Solids, total suspended | monthly average | ≤ 20 mg/L | May–Sep |
| Solids, total suspended | 30-day average | ≤ 30 mg/L | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| Solids, total suspended | 7-day average | ≤ 30 mg/L | May–Sep |
| Solids, total suspended | 7-day average | ≤ 45 mg/L | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| Solids, total suspended | 30-day average | ≤ 150 lb/d | May–Sep |
| Solids, total suspended | 30-day average | ≤ 225 lb/d | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| Solids, total suspended | 7-day average | ≤ 225 lb/d | May–Sep |
| Solids, total suspended | 7-day average | ≤ 338 lb/d | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| Solids, total suspended | 30-day average | report only (mg/L) | all year |
| Solids, total suspended | 30-day average | report only (lb/d) | all year |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3.7 mg/L | Jan, Feb, Mar, Dec |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.9 mg/L | Oct, Nov |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .5 mg/L | May–Sep |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.5 mg/L | Apr |
| Nitrogen, ammonia total [as N] | 7-day average | ≤ 2 mg/L | May–Sep |
| Nitrogen, ammonia total [as N] | 7-day average | ≤ 3.5 mg/L | Oct, Nov |
| Nitrogen, ammonia total [as N] | 7-day average | ≤ 12 mg/L | Jan, Feb, Mar, Dec |
| Nitrogen, ammonia total [as N] | 7-day average | ≤ 5 mg/L | Apr |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2 mg/L | May–Sep |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3.5 mg/L | Oct, Nov |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5 mg/L | Apr |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12 mg/L | Jan, Feb, Mar, Dec |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 3.8 lb/d | May–Sep |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 19 lb/d | Apr |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 14 lb/d | Oct, Nov |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 28 lb/d | Jan, Feb, Mar, Dec |
| Nitrogen, ammonia total [as N] | 7-day average | ≤ 15 lb/d | May–Sep |
| Nitrogen, ammonia total [as N] | 7-day average | ≤ 26 lb/d | Oct, Nov |
| Nitrogen, ammonia total [as N] | 7-day average | ≤ 90 lb/d | Jan, Feb, Mar, Dec |
| Nitrogen, ammonia total [as N] | 7-day average | ≤ 38 lb/d | Apr |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 15 lb/d | May–Sep |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 26 lb/d | Oct, Nov |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 38 lb/d | Apr |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 90 lb/d | Jan, Feb, Mar, Dec |
| Phosphorus, total [as P] | 30-day average | ≤ .1 mg/L | May–Sep |
| Phosphorus, total [as P] | 30-day average | ≤ 1 mg/L | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| Phosphorus, total [as P] | 7-day average | ≤ 2 mg/L | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| Phosphorus, total [as P] | 30-day average | ≤ .75 lb/d | May–Sep |
| Phosphorus, total [as P] | 30-day average | ≤ 7.5 lb/d | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| Phosphorus, total [as P] | 7-day average | ≤ 1.5 lb/d | May–Sep |
| Phosphorus, total [as P] | 7-day average | ≤ 15 lb/d | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| Chloride [as Cl] | monthly average | report only (ug/L) | all year |
| Chloride [as Cl] | daily maximum | report only (ug/L) | all year |
| Chloride [as Cl] | monthly average | report only (lb/d) | all year |
| Chloride [as Cl] | daily maximum | report only (lb/d) | all year |
| Sulfate, total [as SO4] | monthly average | report only (ug/L) | all year |
| Sulfate, total [as SO4] | 7-day average | report only (ug/L) | all year |
| Sulfate, total [as SO4] | monthly average | report only (lb/d) | all year |
| Sulfate, total [as SO4] | 7-day average | report only (lb/d) | all year |
| Flow, in conduit or thru treatment plant | 30-day average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | 30-day average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| E. coli | 30-day geometric mean | ≤ 126 #/100mL | all year |
| E. coli | daily maximum | ≤ 410 #/100mL | all year |
| Mercury, total [as Hg] | monthly average | ≤ 1.3 ng/L | all year |
| Mercury, total [as Hg] | monthly average | ≤ .0000098 lb/d | all year |
| BOD, carbonaceous [5 day, 20 C] | 30-day average | ≤ 25 mg/L | Jan, Feb, Mar, Dec |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 15 mg/L | Oct, Nov |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 4 mg/L | May–Sep |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 29 mg/L | Apr |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 15 mg/L | Oct, Nov |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 29 mg/L | Apr |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 10 mg/L | May–Sep |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 10 mg/L | May–Sep |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 15 mg/L | Oct, Nov |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 40 mg/L | Jan, Feb, Mar, Dec |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 29 mg/L | Apr |
| BOD, carbonaceous [5 day, 20 C] | 30-day average | ≤ 30 lb/d | May–Sep |
| BOD, carbonaceous [5 day, 20 C] | 30-day average | ≤ 188 lb/d | Jan, Feb, Mar, Dec |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 113 lb/d | Oct, Nov |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 218 lb/d | Apr |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 75 lb/d | May–Sep |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 113 lb/d | Oct, Nov |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 218 lb/d | Apr |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 75 lb/d | May–Sep |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 113 lb/d | Oct, Nov |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 300 lb/d | Jan, Feb, Mar, Dec |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 218 lb/d | Apr |
| BOD, carbonaceous [5 day, 20 C] | 30-day average | report only (mg/L) | all year |
| BOD, carbonaceous [5 day, 20 C] | 30-day average | report only (lb/d) | all year |
| BOD, carb-5 day, 20 deg C, percent removal | minimum % removal | ≥ 85 % | Jan, Feb, Mar, Dec |
| Solids, suspended percent removal | minimum % removal | ≥ 85 % | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| Outfall observation,visual, y/n response | 7-day average | report only (N=0;Y=1) | all year |
Cited limits by parameter: Michigan's rules and the federal ones.
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On EPA ECHO: Facility report · DMR history
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