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The University of Iowa

Colleges And Universities, major discharger, Iowa City, Iowa. NPDES permit IA0003077, in force until Jan 31, 2031. Last 12 months: over a limit once (last April 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (10 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 12 reports late

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

Period endingParameterReportedLimitOver by
April 2026Temperature, water deg. fahrenheit, daily maximum149.7431≤ 135.2 deg F11%

Limits in force (32)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheit30-day average≤ 101 deg FJul
Temperature, water deg. fahrenheit30-day average≤ 101.4 deg FJun
Temperature, water deg. fahrenheit30-day average≤ 70.9 deg FJan
Temperature, water deg. fahrenheit30-day average≤ 90.3 deg FApr
Temperature, water deg. fahrenheit30-day average≤ 98.3 deg FOct
Temperature, water deg. fahrenheit30-day average≤ 75.7 deg FFeb
Temperature, water deg. fahrenheit30-day average≤ 100.1 deg FAug
Temperature, water deg. fahrenheit30-day average≤ 80.6 deg FNov
Temperature, water deg. fahrenheit30-day average≤ 101.1 deg FSep
Temperature, water deg. fahrenheit30-day average≤ 91.8 deg FMay
Temperature, water deg. fahrenheit30-day average≤ 87.2 deg FMar
Temperature, water deg. fahrenheit30-day average≤ 71.6 deg FDec
Temperature, water deg. fahrenheitdaily maximum≤ 101 deg FJul
Temperature, water deg. fahrenheitdaily maximum≤ 120 deg FJun
Temperature, water deg. fahrenheitdaily maximum≤ 160.2 deg FJan
Temperature, water deg. fahrenheitdaily maximum≤ 135.2 deg FApr
Temperature, water deg. fahrenheitdaily maximum≤ 110.5 deg FOct
Temperature, water deg. fahrenheitdaily maximum≤ 150.6 deg FFeb
Temperature, water deg. fahrenheitdaily maximum≤ 100.1 deg FAug
Temperature, water deg. fahrenheitdaily maximum≤ 146.4 deg FNov
Temperature, water deg. fahrenheitdaily maximum≤ 101.4 deg FSep
Temperature, water deg. fahrenheitdaily maximum≤ 118.8 deg FMay
Temperature, water deg. fahrenheitdaily maximum≤ 180.8 deg FMar
Temperature, water deg. fahrenheitdaily maximum≤ 164.5 deg FDec
pHdaily minimum≥ 6.5 SUall year
pHdaily maximum≤ 9 SUall year
Chlorine, total residual30-day average≤ .012 mg/Lall year
Chlorine, total residualdaily maximum≤ .019 mg/Lall year
Chlorine, total residual30-day average≤ 4.68 lb/dall year
Chlorine, total residualdaily maximum≤ 7.62 lb/dall year
Toxicity [acute], Ceriodaphnia dubiadaily maximum≤ 1 N=0;Y=1all year
Toxicity [acute], Pimephales promelas [Fathead Minnow]daily maximum≤ 1 N=0;Y=1all year

How strict are these limits?

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

Same industry: the 30 Educational Services permits in Iowa.

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Your permit document is the final word. As JSON: /api/v1/permits/IA0003077 · MCP: https://passage-data.com/mcp