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City of Edgerton

Sewage treatment plant, Edgerton, Wisconsin. NPDES permit WI0020346 expired Sep 30, 2023; its limits still apply. Last 12 months: over a limit 7 times (last April 2026), 46 required values missing, 8 of 22 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form A monthly (15 values), outfall 701 form A monthly (6 values)
Last report on file
June 2026
Oct 2024 – Sep 2025
9 values over a limit, 10 required values missing, 12 of 24 reports late

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

Period endingParameterReportedLimit
October 2025pH, daily maximum8≤ 7.8 SU
November 2025pH, daily maximum8.3≤ 7.8 SU
December 2025pH, daily maximum8≤ 7.8 SU
January 2026pH, daily maximum7.9≤ 7.8 SU
February 2026pH, daily maximum8.1≤ 7.8 SU
March 2026pH, daily maximum7.9≤ 7.8 SU
April 2026pH, daily maximum7.9≤ 7.8 SU

Limits in force (35)

ParameterStatisticLimitMonthsOutfall
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year001
pHdaily minimum≥ 6 SUall year001
pHdaily maximum≤ 7.8 SUall year001
Solids, total suspendedweekly average≤ 45 mg/LMar, May, Jul, Aug, Oct, Dec001
Solids, total suspendedweekly average≤ 45 mg/LApr, Jun, Sep, Nov001
Solids, total suspendedweekly average≤ 45 mg/LJan001
Solids, total suspendedweekly average≤ 45 mg/LFeb001
Solids, total suspendedmonthly average≤ 30 mg/LMar, May, Jul, Aug, Oct, Dec001
Solids, total suspendedmonthly average≤ 30 mg/LApr, Jun, Sep, Nov001
Solids, total suspendedmonthly average≤ 30 mg/LJan001
Solids, total suspendedmonthly average≤ 30 mg/LFeb001
Solids, total suspendedmonthly average≤ 172 lb/dMar, May, Jul, Aug, Oct, Dec001
Solids, total suspendedmonthly average≤ 176 lb/dApr, Jun, Sep, Nov001
Solids, total suspendedmonthly average≤ 172 lb/dJan001
Solids, total suspendedmonthly average≤ 190 lb/dFeb001
Solids, total suspendedweekly average≤ 230 lb/dMar, May, Jul, Aug, Oct, Dec001
Solids, total suspendedweekly average≤ 236 lb/dApr, Jun, Sep, Nov001
Solids, total suspendedweekly average≤ 230 lb/dJan001
Solids, total suspendedweekly average≤ 255 lb/dFeb001
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Jan, Feb, Mar, Apr, Oct, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jan, Feb, Mar, Apr, Oct, Nov, Dec001
Phosphorus, total [as P]monthly average≤ 1 mg/Lall year001
Phosphorus, total [as P]monthly averagereport only (lb/d)all year001
Phosphorus, total [as P]daily maximumreport only (lb/d)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all 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/WI0020346 · MCP: https://passage-data.com/mcp