Passage Data · Check a report · Use it from your AI
Sewage treatment plant, Saline, Michigan. NPDES permit MI0057118 expired Oct 1, 2022; its limits still apply. Last 12 months: over a limit 26 times (last September 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | Coliform, fecal general, 7-day geometric mean | 600 | ≤ 400 #/100mL | 50% |
| October 2025 | Coliform, fecal general, monthly geometric mean | 322 | ≤ 200 #/100mL | 61% |
| November 2025 | Coliform, fecal general, 7-day geometric mean | 408 | ≤ 400 #/100mL | 2% |
| November 2025 | Phosphorus, total [as P], monthly average | .7 | ≤ .5 mg/L | 40% |
| December 2025 | Phosphorus, total [as P], monthly average | .8 | ≤ .5 mg/L | 60% |
| December 2025 | Solids, total suspended, 7-day average | 50 | ≤ 45 mg/L | 11% |
| January 2026 | Phosphorus, total [as P], monthly average | .6 | ≤ .5 mg/L | 20% |
| May 2026 | BOD, carbonaceous [5 day, 20 C], monthly average | 6 | ≤ 4 mg/L | 50% |
| May 2026 | Nitrogen, ammonia total [as N], daily maximum | 2.1 | ≤ 2 mg/L | 5% |
| May 2026 | Solids, total suspended, 7-day average | 32 | ≤ 30 mg/L | 7% |
| June 2026 | BOD, carbonaceous [5 day, 20 C], daily maximum | 11 | ≤ 10 mg/L | 10% |
| June 2026 | BOD, carbonaceous [5 day, 20 C], monthly average | 6 | ≤ 4 mg/L | 50% |
| June 2026 | Nitrogen, ammonia total [as N], daily maximum | 1 | ≤ .6 lb/d | 67% |
| June 2026 | Nitrogen, ammonia total [as N], daily maximum | 8.3 | ≤ 2 mg/L | 315% |
| June 2026 | Nitrogen, ammonia total [as N], monthly average | 1.1 | ≤ .5 mg/L | 120% |
| June 2026 | Phosphorus, total [as P], monthly average | 1.2 | ≤ .5 mg/L | 140% |
| June 2026 | Solids, total suspended, 7-day average | 54 | ≤ 30 mg/L | 80% |
| June 2026 | Solids, total suspended, monthly average | 28 | ≤ 20 mg/L | 40% |
| July 2026 | BOD, carbonaceous [5 day, 20 C], monthly average | 5 | ≤ 4 mg/L | 25% |
| July 2026 | Nitrogen, ammonia total [as N], daily maximum | .7 | ≤ .6 lb/d | 17% |
| July 2026 | Nitrogen, ammonia total [as N], daily maximum | 3.9 | ≤ 2 mg/L | 95% |
| July 2026 | Solids, total suspended, 7-day average | 47 | ≤ 30 mg/L | 57% |
| August 2026 | BOD, carbonaceous [5 day, 20 C], monthly average | 5 | ≤ 4 mg/L | 25% |
| September 2026 | BOD, carbonaceous [5 day, 20 C], monthly average | 5 | ≤ 4 mg/L | 25% |
| September 2026 | Phosphorus, total [as P], monthly average | .6 | ≤ .5 mg/L | 20% |
| September 2026 | Solids, total suspended, 7-day average | 32 | ≤ 30 mg/L | 7% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | daily minimum | ≥ 3 mg/L | Jan, Feb, Mar, Apr, Dec | 001 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 5 mg/L | Oct, Nov | 001 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 6 mg/L | May–Sep | 001 |
| pH | daily minimum | ≥ 6.5 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | Jan, Feb, Mar, Apr, Oct, Nov, Dec | 001 |
| Solids, total suspended | monthly average | ≤ 20 mg/L | May–Sep | 001 |
| Solids, total suspended | 7-day average | ≤ 45 mg/L | Jan, Feb, Mar, Apr, Oct, Nov, Dec | 001 |
| Solids, total suspended | 7-day average | ≤ 30 mg/L | May–Sep | 001 |
| Solids, total suspended | monthly average | ≤ 8.7 lb/d | Jan, Feb, Mar, Apr, Oct, Nov, Dec | 001 |
| Solids, total suspended | monthly average | ≤ 5.8 lb/d | May–Sep | 001 |
| Solids, total suspended | 7-day average | ≤ 13 lb/d | Jan, Feb, Mar, Apr, Oct, Nov, Dec | 001 |
| Solids, total suspended | 7-day average | ≤ 8.7 lb/d | May–Sep | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 12 mg/L | Apr | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .5 mg/L | May–Sep | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 6.8 mg/L | Oct, Nov | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 15 mg/L | Jan, Feb, Mar, Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Apr | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2 mg/L | May–Sep | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Oct, Nov | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Jan, Feb, Mar, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3.5 lb/d | Apr | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .15 lb/d | May–Sep | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2 lb/d | Oct, Nov | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 4.4 lb/d | Jan, Feb, Mar, Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (lb/d) | Apr | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ .6 lb/d | May–Sep | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (lb/d) | Oct, Nov | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (lb/d) | Jan, Feb, Mar, Dec | 001 |
| Phosphorus, total [as P] | monthly average | ≤ .5 mg/L | all year | 001 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | monthly average | ≤ .15 lb/d | all year | 001 |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Coliform, fecal general | monthly geometric mean | ≤ 200 #/100mL | all year | 001 |
| Coliform, fecal general | 7-day geometric mean | ≤ 400 #/100mL | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 25 mg/L | Jan, Feb, Mar, Apr, Oct, Nov, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 4 mg/L | May–Sep | 001 |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 40 mg/L | Jan, Feb, Mar, Apr, Oct, Nov, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 10 mg/L | May–Sep | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 7.3 lb/d | Jan, Feb, Mar, Apr, Oct, Nov, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 1.2 lb/d | May–Sep | 001 |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 12 lb/d | Jan, Feb, Mar, Apr, Oct, Nov, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 2.9 lb/d | May–Sep | 001 |
| BOD, carb-5 day, 20 deg C, percent removal | minimum | ≥ 85 % | Jan, Feb, Mar, Apr, Oct, Nov, Dec | 001 |
| BOD, carb-5 day, 20 deg C, percent removal | daily minimum | report only (%) | Jan, Feb, Mar, Apr, Oct, Nov, Dec | 001 |
| Solids, suspended percent removal | minimum | ≥ 85 % | Jan, Feb, Mar, Apr, Oct, Nov, Dec | 001 |
| Solids, suspended percent removal | daily minimum | report only (%) | Jan, Feb, Mar, Apr, Oct, Nov, Dec | 001 |
| 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.
· Save this facility as a site · Superfund sites nearby · Your permits on one board
On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/MI0057118 · MCP: https://passage-data.com/mcp