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Hartford Water Pollution Control Facility

Sewage treatment plant, major discharger, Hartford, Wisconsin. NPDES permit WI0020192 expired Sep 30, 2023; its limits still apply. Last 12 months: over a limit 2 times (last February 2026), 109 required values missing, 4 of 22 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form A monthly (23 values), outfall 701 form A monthly (7 values)
Last report on file
June 2026
Oct 2024 – Sep 2025
3 values over a limit, 70 required values missing, 0 of 24 reports late

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

Period endingParameterReportedLimitOver by
December 2025Chloride [as Cl], weekly average585.8571≤ 570 mg/L3%
February 2026Chloride [as Cl], weekly average573.1429≤ 570 mg/L1%

Limits in force (49)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]daily minimum≥ 7 mg/Lall year001
BOD, 5-day, 20 deg. Cweekly average≤ 5 mg/LMay–Oct001
BOD, 5-day, 20 deg. Cweekly average≤ 10 mg/LJan, Feb, Mar, Apr, Nov, Dec001
BOD, 5-day, 20 deg. Cmonthly average≤ 5 mg/LMay–Oct001
BOD, 5-day, 20 deg. Cmonthly average≤ 10 mg/LJan, Feb, Mar, Apr, Nov, Dec001
pHdaily minimum≥ 6 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedweekly average≤ 10 mg/LJan, Mar, May, Jul, Aug, Oct, Dec001
Solids, total suspendedweekly average≤ 10 mg/LApr, Jun, Sep, Nov001
Solids, total suspendedweekly average≤ 10 mg/LFeb001
Solids, total suspendedmonthly average≤ 10 mg/LJan, Mar, May, Jul, Aug, Oct, Dec001
Solids, total suspendedmonthly average≤ 10 mg/LApr, Jun, Sep, Nov001
Solids, total suspendedmonthly average≤ 10 mg/LFeb001
Solids, total suspendedmonthly average≤ 295 lb/dJan, Mar, May, Jul, Aug, Oct, Dec001
Solids, total suspendedmonthly average≤ 305 lb/dApr, Jun, Sep, Nov001
Solids, total suspendedmonthly average≤ 326 lb/dFeb001
Solids, total suspendedweekly average≤ 401 lb/dJan, Mar, May, Jul, Aug, Oct, Dec001
Solids, total suspendedweekly average≤ 414 lb/dApr, Jun, Sep, Nov001
Solids, total suspendedweekly average≤ 443 lb/dFeb001
Nitrogen, total [as N]daily maximumreport only (mg/L)all year001
Nitrogen, ammonia total [as N]weekly average≤ 4.9 mg/LApr001
Nitrogen, ammonia total [as N]weekly average≤ 3.6 mg/LMay–Sep001
Nitrogen, ammonia total [as N]weekly average≤ 7.8 mg/LOct001
Nitrogen, ammonia total [as N]weekly average≤ 7.8 mg/LJan, Feb, Mar, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 4.3 mg/LJan, Feb, Mar, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 2.7 mg/LApr001
Nitrogen, ammonia total [as N]monthly average≤ 1.2 mg/LMay–Sep001
Nitrogen, ammonia total [as N]monthly average≤ 3.8 mg/LOct001
Nitrogen, ammonia total [as N]daily maximum≤ 7.8 mg/LJan, Feb, Mar, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 7.8 mg/LApr001
Nitrogen, ammonia total [as N]daily maximum≤ 7.8 mg/LMay–Sep001
Nitrogen, ammonia total [as N]daily maximum≤ 7.8 mg/LOct001
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year001
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P]monthly average≤ .225 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
Chloride [as Cl]weekly average≤ 570 mg/Lall year001
Chloride [as Cl]daily maximumreport only (lb/d)all year001
Mercury, total recoverabledaily maximumreport only (ng/L)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
Mercury, total recoverabledaily maximumreport only (ng/L)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/WI0020192 · MCP: https://passage-data.com/mcp