THE UNIVERSITY OF IOWA

NPDES permit IA0003077 · Major NON-POTW · effective, expires 2031-01-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

EPA's record, 2025-09-01 to 2026-08-31

1values over a limit
0required values missing, on 0 form(s)
0of 11 forms filed late

Last period with anything received: 2026-07-31. Most often over: Temperature, water deg. fahrenheit (1).

Reporting

Reports are due about 15 days after each monitoring period ends (the most common figure among IA permits in EPA's filings — check your permit).

Limits in force (32)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheit30DA AVG <= 101 deg F Jul
001Temperature, water deg. fahrenheit30DA AVG <= 101.4 deg F Jun
001Temperature, water deg. fahrenheit30DA AVG <= 70.9 deg F Jan
001Temperature, water deg. fahrenheit30DA AVG <= 90.3 deg F Apr
001Temperature, water deg. fahrenheit30DA AVG <= 98.3 deg F Oct
001Temperature, water deg. fahrenheit30DA AVG <= 75.7 deg F Feb
001Temperature, water deg. fahrenheit30DA AVG <= 100.1 deg F Aug
001Temperature, water deg. fahrenheit30DA AVG <= 80.6 deg F Nov
001Temperature, water deg. fahrenheit30DA AVG <= 101.1 deg F Sep
001Temperature, water deg. fahrenheit30DA AVG <= 91.8 deg F May
001Temperature, water deg. fahrenheit30DA AVG <= 87.2 deg F Mar
001Temperature, water deg. fahrenheit30DA AVG <= 71.6 deg F Dec
001Temperature, water deg. fahrenheitDAILY MX <= 101 deg F Jul
001Temperature, water deg. fahrenheitDAILY MX <= 120 deg F Jun
001Temperature, water deg. fahrenheitDAILY MX <= 160.2 deg F Jan
001Temperature, water deg. fahrenheitDAILY MX <= 135.2 deg F Apr
001Temperature, water deg. fahrenheitDAILY MX <= 110.5 deg F Oct
001Temperature, water deg. fahrenheitDAILY MX <= 150.6 deg F Feb
001Temperature, water deg. fahrenheitDAILY MX <= 100.1 deg F Aug
001Temperature, water deg. fahrenheitDAILY MX <= 146.4 deg F Nov
001Temperature, water deg. fahrenheitDAILY MX <= 101.4 deg F Sep
001Temperature, water deg. fahrenheitDAILY MX <= 118.8 deg F May
001Temperature, water deg. fahrenheitDAILY MX <= 180.8 deg F Mar
001Temperature, water deg. fahrenheitDAILY MX <= 164.5 deg F Dec
001pHDAILY MN >= 6.5 SU all year
001pHDAILY MX <= 9 SU all year
001Chlorine, total residual30DA AVG <= .012 mg/L all year
001Chlorine, total residualDAILY MX <= .019 mg/L all year
001Chlorine, total residual30DA AVG <= 4.68 lb/d all year
001Chlorine, total residualDAILY MX <= 7.62 lb/d all year
001Toxicity [acute], Ceriodaphnia dubiaDAILY MX <= 1 N=0;Y=1 all year
001Toxicity [acute], Pimephales promelas [Fathead Minnow]DAILY MX <= 1 N=0;Y=1 all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states