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Northwestern University

Colleges And Universities, Evanston, Illinois. NPDES permit IL0066541 expired Jul 31, 2018; its limits still apply. Last 12 months: no values over a limit, 2 of 24 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form 0 monthly (6 values), outfall 002 form 0 monthly (6 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 2 of 24 reports late

Limits in force (26)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitmonthly average≤ 45 deg FJan–Mar001
Temperature, water deg. fahrenheitmonthly maximum≤ 55 deg FApr001
Temperature, water deg. fahrenheitmonthly maximum≤ 60 deg FMay, Nov001
Temperature, water deg. fahrenheitmonthly maximum≤ 70 deg FJun001
Temperature, water deg. fahrenheitmonthly maximum≤ 80 deg FJul001
Temperature, water deg. fahrenheitmonthly maximum≤ 80 deg FAug, Sep001
Temperature, water deg. fahrenheitmonthly maximum≤ 65 deg FOct001
Temperature, water deg. fahrenheitmonthly maximum≤ 50 deg FDec001
pHmonthly minimum≥ 7 SUall year001
pHmonthly maximum≤ 9 SUall 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
Chlorine, total residualdaily maximum≤ .05 mg/Lall year001
Temperature, water deg. fahrenheitmonthly average≤ 45 deg FJan–Mar002
Temperature, water deg. fahrenheitmonthly maximum≤ 55 deg FApr002
Temperature, water deg. fahrenheitmonthly maximum≤ 60 deg FMay, Nov002
Temperature, water deg. fahrenheitmonthly maximum≤ 70 deg FJun002
Temperature, water deg. fahrenheitmonthly maximum≤ 80 deg FJul002
Temperature, water deg. fahrenheitmonthly maximum≤ 80 deg FAug, Sep002
Temperature, water deg. fahrenheitmonthly maximum≤ 65 deg FOct002
Temperature, water deg. fahrenheitmonthly maximum≤ 50 deg FDec002
pHmonthly minimum≥ 7 SUall year002
pHmonthly maximum≤ 9 SUall year002
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002
Chlorine, total residualdaily maximum≤ .05 mg/Lall year002

How strict are these limits?

Cited limits by parameter: Illinois's rules and the federal ones.

Same industry: the 52 Educational Services permits in Illinois.

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Your permit document is the final word. As JSON: /api/v1/permits/IL0066541 · MCP: https://passage-data.com/mcp