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Holmen, Village of

Sewage treatment plant, Holmen, Wisconsin. NPDES permit WI0024261 expired Sep 30, 2022; its limits still apply. Last 12 months: no values over a limit, 184 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form A monthly (12 values), outfall 701 form A monthly (6 values)
Last report on file
None
Oct 2024 – Sep 2025
0 values over a limit, 202 required values missing, 0 of 24 reports late

Limits in force (26)

ParameterStatisticLimitMonthsOutfall
BOD, 5-day, 20 deg. Cweekly average≤ 35 mg/LJan, Feb, Mar, Apr, Nov, Dec001
BOD, 5-day, 20 deg. Cweekly average≤ 29 mg/LMay–Oct001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, Nov, Dec001
BOD, 5-day, 20 deg. Cmonthly average≤ 29 mg/LMay–Oct001
pHdaily minimum≥ 6 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedweekly average≤ 35 mg/Lall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Nitrogen, ammonia total [as N]weekly average≤ 10 mg/LJan–Apr001
Nitrogen, ammonia total [as N]weekly average≤ 7.9 mg/LMay–Sep001
Nitrogen, ammonia total [as N]weekly average≤ 17 mg/LOct–Dec001
Nitrogen, ammonia total [as N]monthly average≤ 4.9 mg/LJan–Apr001
Nitrogen, ammonia total [as N]monthly average≤ 4.4 mg/LMay–Sep001
Nitrogen, ammonia total [as N]monthly average≤ 8.1 mg/LOct–Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 24 mg/LJan–Apr001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)May–Sep001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Oct–Dec001
Phosphorus, total [as P]monthly average≤ 1 mg/Lall year001
Coliform, fecal generalweekly geometric mean≤ 656 #/100mLMay–Sep001
Coliform, fecal generalgeometric mean≤ 400 #/100mLMay–Sep001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year701
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year701
Solids, total suspendedmonthly averagereport only (mg/L)all year701
Solids, total suspendeddaily maximumreport only (mg/L)all year701
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year701
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year701

How strict are these limits?

Cited limits by parameter: Wisconsin'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/WI0024261 · MCP: https://passage-data.com/mcp