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Village of Cascade

Sewage treatment plant, Cascade, Wisconsin. NPDES permit WI0031372 expired Mar 31, 2021; its limits still apply. Last 12 months: over a limit 8 times (last April 2026), 38 required values missing, 8 of 25 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form A monthly (7 values), outfall 001 form Q quarterly (2 values), outfall 701 form A monthly (7 values)
Last report on file
June 2026
Oct 2024 – Sep 2025
12 values over a limit, 16 required values missing, 6 of 28 reports late

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

Period endingParameterReportedLimitOver by
December 2025Phosphorus, total [as P], monthly average5.3667≤ 3.8 mg/L41%
December 2025Solids, total suspended, monthly average88.7778≤ 60 mg/L48%
December 2025Solids, total suspended, weekly average156.6667≤ 60 mg/L161%
January 2026Phosphorus, total [as P], monthly average4.4667≤ 3.8 mg/L18%
January 2026Solids, total suspended, monthly average69.0833≤ 60 mg/L15%
January 2026Solids, total suspended, weekly average133≤ 60 mg/L122%
April 2026Solids, total suspended, monthly average116.8333≤ 60 mg/L95%
April 2026Solids, total suspended, weekly average212≤ 60 mg/L253%

Limits in force (16)

ParameterStatisticLimitMonthsOutfall
pHdaily minimum≥ 6 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedweekly average≤ 60 mg/Lall year001
Solids, total suspendedmonthly average≤ 60 mg/Lall year001
Phosphorus, total [as P]monthly average≤ 3.8 mg/Lall year001
Chloride [as Cl]quarterly maximumreport only (mg/L)all year001
Copper, total recoverablequarterly maximumreport only (ug/L)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
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
Phosphorus, total [as P]daily 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/WI0031372 · MCP: https://passage-data.com/mcp