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Nichols Wastewater Treatment F

Sewage treatment plant, Nichols, Wisconsin. NPDES permit WI0020508 expired Jun 30, 2022; its limits still apply. Last 12 months: over a limit 4 times (last June 2026), 46 required values missing, 14 of 22 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form A monthly (17 values), outfall 701 form A monthly (4 values)
Last report on file
June 2026
Oct 2024 – Sep 2025
0 values over a limit, 10 required values missing, 16 of 24 reports late

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

Period endingParameterReportedLimitOver by
February 2026BOD, 5-day, 20 deg. C, weekly average30.5≤ 28 mg/L9%
February 2026Solids, total suspended, weekly average29≤ 28 mg/L4%
June 2026Nitrogen, ammonia total [as N], daily maximum26≤ 16 mg/L63%
June 2026Nitrogen, ammonia total [as N], weekly average< 23≤ 16 mg/L44%

Limits in force (69)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]daily minimum≥ 7 mg/Lall year001
BOD, 5-day, 20 deg. Cweekly average≤ 12 mg/LJul001
BOD, 5-day, 20 deg. Cweekly average≤ 10 mg/LAug001
BOD, 5-day, 20 deg. Cweekly average≤ 15 mg/LSep001
BOD, 5-day, 20 deg. Cweekly average≤ 33 mg/LOct001
BOD, 5-day, 20 deg. Cweekly average≤ 36 mg/LDec001
BOD, 5-day, 20 deg. Cweekly average≤ 26 mg/LJan001
BOD, 5-day, 20 deg. Cweekly average≤ 28 mg/LFeb001
BOD, 5-day, 20 deg. Cweekly average≤ 38 mg/LMar001
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/LApr, May001
BOD, 5-day, 20 deg. Cweekly average≤ 30 mg/LJun001
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/LNov001
BOD, 5-day, 20 deg. Cmonthly average≤ 12 mg/LJul001
BOD, 5-day, 20 deg. Cmonthly average≤ 10 mg/LAug001
BOD, 5-day, 20 deg. Cmonthly average≤ 15 mg/LSep001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/LOct001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/LDec001
BOD, 5-day, 20 deg. Cmonthly average≤ 26 mg/LJan001
BOD, 5-day, 20 deg. Cmonthly average≤ 28 mg/LFeb001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/LMar001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/LApr, May001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/LJun001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/LNov001
BOD, 5-day, 20 deg. Cweekly average≤ 3.3 lb/dJul001
BOD, 5-day, 20 deg. Cweekly average≤ 3 lb/dAug001
BOD, 5-day, 20 deg. Cweekly average≤ 4 lb/dSep001
BOD, 5-day, 20 deg. Cweekly average≤ 8.6 lb/dOct001
BOD, 5-day, 20 deg. Cweekly average≤ 9.6 lb/dDec001
BOD, 5-day, 20 deg. Cweekly average≤ 6.9 lb/dJan001
BOD, 5-day, 20 deg. Cweekly average≤ 7.4 lb/dFeb001
BOD, 5-day, 20 deg. Cweekly average≤ 9.9 lb/dMar001
BOD, 5-day, 20 deg. Cweekly averagereport only (lb/d)Apr, May001
BOD, 5-day, 20 deg. Cweekly average≤ 7.8 lb/dJun001
BOD, 5-day, 20 deg. Cweekly averagereport only (lb/d)Nov001
pHdaily minimum≥ 6 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedweekly average≤ 12 mg/LJul001
Solids, total suspendedweekly average≤ 10 mg/LAug001
Solids, total suspendedweekly average≤ 15 mg/LSep001
Solids, total suspendedweekly average≤ 33 mg/LOct001
Solids, total suspendedweekly average≤ 45 mg/LApr, May, Nov001
Solids, total suspendedweekly average≤ 36 mg/LDec001
Solids, total suspendedweekly average≤ 26 mg/LJan001
Solids, total suspendedweekly average≤ 28 mg/LFeb001
Solids, total suspendedweekly average≤ 38 mg/LMar001
Solids, total suspendedweekly average≤ 30 mg/LJun001
Solids, total suspendedmonthly average≤ 12 mg/LJul001
Solids, total suspendedmonthly average≤ 10 mg/LAug001
Solids, total suspendedmonthly average≤ 15 mg/LSep001
Solids, total suspendedmonthly average≤ 30 mg/LOct001
Solids, total suspendedmonthly average≤ 30 mg/LApr, May, Nov001
Solids, total suspendedmonthly average≤ 30 mg/LDec001
Solids, total suspendedmonthly average≤ 26 mg/LJan001
Solids, total suspendedmonthly average≤ 28 mg/LFeb001
Solids, total suspendedmonthly average≤ 30 mg/LMar001
Solids, total suspendedmonthly average≤ 30 mg/LJun001
Nitrogen, ammonia total [as N]weekly average≤ 16 mg/Lall year001
Nitrogen, ammonia total [as N]monthly average≤ 16 mg/Lall year001
Nitrogen, ammonia total [as N]daily maximum≤ 16 mg/Lall year001
Phosphorus, total [as P]monthly average≤ 1.4 mg/Lall year001
Chlorine, total residualweekly average≤ 12 ug/LMay–Sep001
Chlorine, total residualmonthly average≤ 12 ug/LMay–Sep001
Chlorine, total residualdaily maximum≤ 38 ug/LMay–Sep001
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

How strict are these limits?

Cited limits by parameter: Wisconsin'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/WI0020508 · MCP: https://passage-data.com/mcp