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Hannahville Indian Community Reverse Osmosis Plant

Sewage treatment plant, Wilson, Michigan. NPDES permit MI0059650, in force until Oct 24, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 21 days after each period: form A quarterly (18 values), form Q twice a year
Renewal application due
Apr 27, 2027 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 14 reports late

Limits in force (22)

ParameterStatisticLimitMonths
pHdaily minimum≥ 6.5 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspended30-day average≤ 30 mg/Lall year
Solids, total suspendeddaily maximum≤ 50 mg/Lall year
Solids, total suspended30-day average≤ 25 lb/dall year
Solids, total suspendeddaily maximum≤ 42 lb/dall year
Chloride [as Cl]daily maximumreport only (mg/L)all year
Sulfate, total [as SO4]daily maximumreport only (mg/L)all year
Iron, total [as Fe]30-day average≤ 5 mg/Lall year
Iron, total [as Fe]daily maximum≤ 10 mg/Lall year
Iron, total [as Fe]30-day average≤ 4.2 lb/dall year
Iron, total [as Fe]daily maximum≤ 8.4 lb/dall year
Radium 226 + radium 228, totaldaily maximumreport only (pCi/L)all year
Radium 226 + radium 228, totaldaily maximumreport only (pCi/L)all year
Flow, in conduit or thru treatment plant30-day averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residual30-day average≤ 11 ug/Lall year
Chlorine, total residualdaily maximum≤ 19 ug/Lall year
Solids, total dissolveddaily maximumreport only (mg/L)all year
Alpha gross radioactivitydaily maximumreport only (pCi/L)all year
Alpha gross radioactivitydaily maximumreport only (pCi/L)all year
Outfall observation,visual, y/n response30-day averagereport only (N=0;Y=1)all year

How strict are these limits?

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

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MI0059650 · MCP: https://passage-data.com/mcp