MIDAMERICAN ENERGY COMPANY

NPDES permit IA0061859 · Major NON-POTW · effective, expires 2029-01-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

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

1values over a limit
6required values missing, on 1 form(s)
0of 55 forms filed late

Last period with anything received: 2026-07-31. Most often over: pH (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 (76)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheit30DA AVG <= 105.1 deg F Sep
001Temperature, water deg. fahrenheit30DA AVG <= 68.7 deg F Dec
001Temperature, water deg. fahrenheit30DA AVG <= 105.1 deg F Jul
001Temperature, water deg. fahrenheit30DA AVG <= 66 deg F Feb
001Temperature, water deg. fahrenheit30DA AVG <= 60.6 deg F Jan
001Temperature, water deg. fahrenheit30DA AVG <= 78.6 deg F Nov
001Temperature, water deg. fahrenheit30DA AVG <= 102 deg F Jun
001Temperature, water deg. fahrenheit30DA AVG <= 105.1 deg F Aug
001Temperature, water deg. fahrenheit30DA AVG <= 80.6 deg F Mar
001Temperature, water deg. fahrenheit30DA AVG <= 87.6 deg F Apr
001Temperature, water deg. fahrenheit30DA AVG <= 97.7 deg F May
001Temperature, water deg. fahrenheit30DA AVG <= 90.3 deg F Oct
001Temperature, water deg. fahrenheitDAILY MX <= 105.1 deg F Sep
001Temperature, water deg. fahrenheitDAILY MX <= 105.1 deg F Dec
001Temperature, water deg. fahrenheitDAILY MX <= 105.1 deg F Jul
001Temperature, water deg. fahrenheitDAILY MX <= 105.1 deg F Feb
001Temperature, water deg. fahrenheitDAILY MX <= 105.1 deg F Jan
001Temperature, water deg. fahrenheitDAILY MX <= 105.1 deg F Nov
001Temperature, water deg. fahrenheitDAILY MX <= 105.1 deg F Jun
001Temperature, water deg. fahrenheitDAILY MX <= 105.1 deg F Aug
001Temperature, water deg. fahrenheitDAILY MX <= 105.1 deg F Mar
001Temperature, water deg. fahrenheitDAILY MX <= 105.1 deg F Apr
001Temperature, water deg. fahrenheitDAILY MX <= 105.1 deg F May
001Temperature, water deg. fahrenheitDAILY MX <= 105.1 deg F Oct
004pHDAILY MN >= 6 SU all year
004pHDAILY MX <= 9 SU all year
004Solids, total suspended30DA AVG <= 30 mg/L all year
004Solids, total suspendedDAILY MX <= 100 mg/L all year
004Solids, total suspended30DA AVG report only all year
004Solids, total suspendedDAILY MX report only all year
004Oil & Grease30DA AVG <= 15 mg/L all year
004Oil & GreaseDAILY MX <= 20 mg/L all year
004Toxicity [acute], Ceriodaphnia dubiaDAILY MX <= 1 N=0;Y=1 all year
004Toxicity [acute], Pimephales promelas [Fathead Minnow]DAILY MX <= 1 N=0;Y=1 all year
005pHDAILY MN >= 6 SU all year
005pHDAILY MX <= 9 SU all year
005Solids, total suspended30DA AVG <= 30 mg/L all year
005Solids, total suspendedDAILY MX <= 100 mg/L all year
005Solids, total suspended30DA AVG report only all year
005Solids, total suspendedDAILY MX report only all year
005Oil & Grease30DA AVG <= 15 mg/L all year
005Oil & GreaseDAILY MX <= 20 mg/L all year
007Temperature, water deg. fahrenheit30DA AVG <= 67.9 deg F Jan
007Temperature, water deg. fahrenheit30DA AVG <= 105 deg F May
007Temperature, water deg. fahrenheit30DA AVG <= 85.9 deg F Nov
007Temperature, water deg. fahrenheit30DA AVG <= 112.1 deg F Jul
007Temperature, water deg. fahrenheit30DA AVG <= 97.6 deg F Oct
007Temperature, water deg. fahrenheit30DA AVG <= 112.1 deg F Aug
007Temperature, water deg. fahrenheit30DA AVG <= 112.1 deg F Sep
007Temperature, water deg. fahrenheit30DA AVG <= 94.9 deg F Apr
007Temperature, water deg. fahrenheit30DA AVG <= 87.9 deg F Mar
007Temperature, water deg. fahrenheit30DA AVG <= 76 deg F Dec
007Temperature, water deg. fahrenheit30DA AVG <= 109.3 deg F Jun
007Temperature, water deg. fahrenheit30DA AVG <= 73.3 deg F Feb
007Temperature, water deg. fahrenheitDAILY MX <= 112.1 deg F Jan
007Temperature, water deg. fahrenheitDAILY MX <= 112.1 deg F May
007Temperature, water deg. fahrenheitDAILY MX <= 112.1 deg F Nov
007Temperature, water deg. fahrenheitDAILY MX <= 112.1 deg F Jul
007Temperature, water deg. fahrenheitDAILY MX <= 112.1 deg F Oct
007Temperature, water deg. fahrenheitDAILY MX <= 112.1 deg F Aug
007Temperature, water deg. fahrenheitDAILY MX <= 112.1 deg F Sep
007Temperature, water deg. fahrenheitDAILY MX <= 112.1 deg F Apr
007Temperature, water deg. fahrenheitDAILY MX <= 112.1 deg F Mar
007Temperature, water deg. fahrenheitDAILY MX <= 112.1 deg F Dec
007Temperature, water deg. fahrenheitDAILY MX <= 112.1 deg F Jun
007Temperature, water deg. fahrenheitDAILY MX <= 112.1 deg F Feb
008pHDAILY MN >= 6 SU all year
008pHDAILY MX <= 9 SU all year
008Solids, total suspended30DA AVG <= 30 mg/L all year
008Solids, total suspendedDAILY MX <= 100 mg/L all year
008Oil & Grease30DA AVG <= 15 mg/L all year
008Oil & GreaseDAILY MX <= 20 mg/L all year
008Copper, total [as Cu]30DA AVG <= 1 mg/L all year
008Copper, total [as Cu]DAILY MX <= 1 mg/L all year
008Iron, total [as Fe]30DA AVG <= 1 mg/L all year
008Iron, total [as Fe]DAILY MX <= 1 mg/L 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