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Muskegon County Public Works Department

Sewage treatment plant, Whitehall, Michigan. NPDES permit MI0029173 expired Oct 1, 2018; its limits still apply. Last 12 months: no values over a limit, 20 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 21 days after each period: outfall 002 form A monthly (5 values), outfall SLD form L yearly (42 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 24 required values missing, 1 of 13 reports late

Limits in force (49)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]daily minimumreport only (mg/L)May–Sep002
pHdaily minimum≥ 6.5 SUall year002
pHdaily maximum≤ 9 SUall year002
Base/neutral compoundsmonthly totalreport only (ug/d)all year002
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002
Organics, volatile [NJAC reg. 7:23-17e]monthly totalreport only (ug/d)all year002
Solids, totalmonthly minimumreport only (%)all yearSLD
Solids, totalmonthly averagereport only (%)all yearSLD
Solids, totalmonthly maximumreport only (%)all yearSLD
Arsenic, dry weightmonthly minimumreport only (mg/kg)all yearSLD
Arsenic, dry weightmonthly averagereport only (mg/kg)all yearSLD
Arsenic, dry weightmonthly maximum≤ 75 mg/kgall yearSLD
Selenium, dry weightmonthly minimumreport only (mg/kg)all yearSLD
Selenium, dry weightmonthly averagereport only (mg/kg)all yearSLD
Selenium, dry weightmonthly maximum≤ 100 mg/kgall yearSLD
Copper, dry weightmonthly minimumreport only (mg/kg)all yearSLD
Copper, dry weightmonthly averagereport only (mg/kg)all yearSLD
Copper, dry weightmonthly maximum≤ 4300 mg/kgall yearSLD
Cadmium, dry weightmonthly minimumreport only (mg/kg)all yearSLD
Cadmium, dry weightmonthly averagereport only (mg/kg)all yearSLD
Cadmium, dry weightmonthly maximum≤ 85 mg/kgall yearSLD
Nitrogen, total Kjeldahlmonthly minimumreport only (mg/kg)all yearSLD
Nitrogen, total Kjeldahlmonthly averagereport only (mg/kg)all yearSLD
Nitrogen, total Kjeldahlmonthly maximumreport only (mg/kg)all yearSLD
Molybdenum, sludge, total, dry weight [as Mo]monthly minimumreport only (mg/kg)all yearSLD
Molybdenum, sludge, total, dry weight [as Mo]monthly averagereport only (mg/kg)all yearSLD
Molybdenum, sludge, total, dry weight [as Mo]monthly maximum≤ 75 mg/kgall yearSLD
Zinc, sludge, total, dry weight [as Zn]monthly minimumreport only (mg/kg)all yearSLD
Zinc, sludge, total, dry weight [as Zn]monthly averagereport only (mg/kg)all yearSLD
Zinc, sludge, total, dry weight [as Zn]monthly maximum≤ 7500 mg/kgall yearSLD
Lead, sludge, total, dry weight [as Pb]monthly minimumreport only (mg/kg)all yearSLD
Lead, sludge, total, dry weight [as Pb]monthly averagereport only (mg/kg)all yearSLD
Lead, sludge, total, dry weight [as Pb]monthly maximum≤ 840 mg/kgall yearSLD
Nickel, sludge, total, dry weight [as Ni]monthly minimumreport only (mg/kg)all yearSLD
Nickel, sludge, total, dry weight [as Ni]monthly averagereport only (mg/kg)all yearSLD
Nickel, sludge, total, dry weight [as Ni]monthly maximum≤ 420 mg/kgall yearSLD
Nitrogen, sludge, total, dry weight [as N]monthly minimumreport only (mg/kg)all yearSLD
Nitrogen, sludge, total, dry weight [as N]monthly averagereport only (mg/kg)all yearSLD
Nitrogen, sludge, total, dry weight [as N]monthly maximumreport only (mg/kg)all yearSLD
Mercury, sludge, total, dry weight [as Hg]monthly minimumreport only (mg/kg)all yearSLD
Mercury, sludge, total, dry weight [as Hg]monthly averagereport only (mg/kg)all yearSLD
Mercury, sludge, total, dry weight [as Hg]monthly maximum≤ 57 mg/kgall yearSLD
Potassium, sludge, total, dry weight [as K]monthly minimumreport only (mg/kg)all yearSLD
Potassium, sludge, total, dry weight [as K]monthly averagereport only (mg/kg)all yearSLD
Potassium, sludge, total, dry weight [as K]monthly maximumreport only (mg/kg)all yearSLD
Phosphorus, sludge, total, dry weight [as P]monthly minimumreport only (mg/kg)all yearSLD
Phosphorus, sludge, total, dry weight [as P]monthly averagereport only (mg/kg)all yearSLD
Phosphorus, sludge, total, dry weight [as P]monthly maximumreport only (mg/kg)all yearSLD

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/MI0029173 · MCP: https://passage-data.com/mcp