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US Army Headquarters, Fort McCoy

Sewage treatment plant, Sparta, Wisconsin. NPDES permit WI0022420 expired Dec 31, 2023; its limits still apply. Last 12 months: over a limit once (last June 2026), 52 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 (18 values), outfall 701 form A monthly (6 values)
Last report on file
June 2026
Oct 2024 – Sep 2025
2 values over a limit, 10 required values missing, 22 of 24 reports late

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

Period endingParameterReportedLimit
June 2026pH, daily minimum5.05≥ 6 SU

Limits in force (30)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]daily minimum≥ 7 mg/Lall year001
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/LJan, Feb, Mar, Apr, Nov, Dec001
BOD, 5-day, 20 deg. Cweekly average≤ 45 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≤ 30 mg/LMay–Oct001
BOD, 5-day, 20 deg. Cweekly average≤ 855 lb/dJan, Feb, Mar, Apr, Nov, Dec001
BOD, 5-day, 20 deg. Cweekly average≤ 438 lb/dMay–Oct001
pHdaily minimum≥ 6 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedweekly average≤ 45 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Solids, total suspendedweekly average≤ 45 mg/LMay–Sep001
Solids, total suspendedmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Solids, total suspendedmonthly average≤ 30 mg/LMay–Sep001
Solids, total suspendedweekly average≤ 855 lb/dJan, Feb, Mar, Apr, Nov, Dec001
Solids, total suspendedweekly average≤ 438 lb/dMay–Sep001
Nitrogen, ammonia total [as N]weekly average≤ 20 mg/Lall year001
Nitrogen, ammonia total [as N]monthly average≤ 20 mg/Lall year001
Nitrogen, ammonia total [as N]daily maximum≤ 20 mg/Lall year001
Phosphorus, total [as P]monthly average≤ 1 mg/Lall year001
Phosphorus, total [as P]monthly averagereport 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≤ 780 #/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.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/WI0022420 · MCP: https://passage-data.com/mcp