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Village of Otisville

Sewage treatment plant, Otisville, Michigan. NPDES permit MI0028720 expired Oct 1, 2009; its limits still apply. Last 12 months: over a limit 2 times (last June 2026), 4 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 22 days after each period: form A monthly (23 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 46 required values missing, 3 of 8 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
June 2026Coliform, fecal general, 7-day geometric mean600≤ 400 #/100mL50%
June 2026Coliform, fecal general, monthly geometric mean600≤ 200 #/100mL200%

Limits in force (43)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily minimum≥ 4 mg/LApr–Nov
pHdaily minimum≥ 6.5 SUApr–Nov
pHdaily maximum≤ 9 SUApr–Nov
Solids, total suspendedmonthly average≤ 10 mg/LApr–Nov
Solids, total suspendeddaily maximumreport only (mg/L)Apr–Nov
Solids, total suspendedmonthly average≤ 10 lb/dApr–Nov
Solids, total suspendeddaily maximumreport only (lb/d)Apr–Nov
Nitrogen, ammonia total [as N]monthly average≤ 4 mg/LApr, May
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/LOct, Nov
Nitrogen, ammonia total [as N]monthly average≤ 4 mg/LApr, May
Nitrogen, ammonia total [as N]monthly average≤ .5 mg/LJun–Sep
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Oct, Nov
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Apr, May
Nitrogen, ammonia total [as N]daily maximum≤ 2 mg/LJun–Sep
Nitrogen, ammonia total [as N]monthly average≤ 4 lb/dApr, May
Nitrogen, ammonia total [as N]monthly average≤ 2 lb/dOct, Nov
Nitrogen, ammonia total [as N]monthly average≤ 4 lb/dApr, May
Nitrogen, ammonia total [as N]monthly average≤ .5 lb/dJun–Sep
Nitrogen, ammonia total [as N]daily maximumreport only (lb/d)Oct, Nov
Nitrogen, ammonia total [as N]daily maximumreport only (lb/d)Apr, May
Nitrogen, ammonia total [as N]7-day average≤ 2 lb/dJun–Sep
Phosphorus, total [as P]monthly average≤ .5 mg/LApr–Nov
Phosphorus, total [as P]daily maximumreport only (mg/L)Apr–Nov
Phosphorus, total [as P]monthly average≤ .5 lb/dApr–Nov
Phosphorus, total [as P]daily maximumreport only (lb/d)Apr–Nov
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)Apr–Nov
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)Apr–Nov
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLApr–Nov
Coliform, fecal general7-day geometric mean≤ 400 #/100mLApr–Nov
BOD, carbonaceous [5 day, 20 C]monthly average≤ 4 mg/LApr, May
BOD, carbonaceous [5 day, 20 C]monthly average≤ 4 mg/LJun–Sep
BOD, carbonaceous [5 day, 20 C]monthly average≤ 4 mg/LApr, May
BOD, carbonaceous [5 day, 20 C]monthly average≤ 4 mg/LOct, Nov
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 10 mg/LJun–Sep
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)Apr, May
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)Oct, Nov
BOD, carbonaceous [5 day, 20 C]monthly average≤ 4 lb/dApr, May
BOD, carbonaceous [5 day, 20 C]monthly average≤ 4 lb/dJun–Sep
BOD, carbonaceous [5 day, 20 C]monthly average≤ 4 lb/dApr, May
BOD, carbonaceous [5 day, 20 C]monthly average≤ 4 lb/dOct, Nov
BOD, carbonaceous [5 day, 20 C]7-day average≤ 10 lb/dJun–Sep
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (lb/d)Apr, May
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (lb/d)Oct, Nov

How strict are these limits?

Cited limits by parameter: Michigan's rules and the federal ones.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MI0028720 · MCP: https://passage-data.com/mcp