MIDAMERICAN ENERGY COMPANY

NPDES permit IA0063282 · Major NON-POTW · administratively continued, expires 2025-03-31 · 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.

This permit expired on 2025-03-31 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

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

0values over a limit
0required values missing, on 0 form(s)
0of 36 forms filed late

Last period with anything received: 2026-08-31.

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 (37)

OutfallParameterStatisticLimitMonths
001pHDAILY MN >= 6 SU all year
001pHDAILY MX <= 9 SU all year
001Chromium, total [as Cr]30DA AVG <= .2 mg/L all year
001Chromium, total [as Cr]DAILY MX <= .2 mg/L all year
001Zinc, total [as Zn]30DA AVG <= 1 mg/L all year
001Zinc, total [as Zn]DAILY MX <= 1 mg/L all year
001Chlorine, total residual30DA AVG <= .15 mg/L all year
001Chlorine, total residualDAILY MX <= .15 mg/L all year
001Chlorine, total residual30DA AVG <= .62 lb/d all year
001Chlorine, total residualDAILY MX <= .62 lb/d all year
001Chlorine, free available30DA AVG <= .2 mg/L all year
001Chlorine, free availableDAILY MX <= .5 mg/L all year
001Chlorination durationDAILY MX <= 2 hr/d all year
002pHDAILY MN >= 6 SU all year
002pHDAILY MX <= 9 SU all year
002Solids, total suspended30DA AVG <= 21 mg/L all year
002Solids, total suspendedDAILY MX <= 69 mg/L all year
002Solids, total suspended30DA AVG <= 72 lb/d all year
002Solids, total suspendedDAILY MX <= 232 lb/d all year
002Oil & Grease30DA AVG <= 10 mg/L all year
002Oil & GreaseDAILY MX <= 14 mg/L all year
002Oil & Grease30DA AVG <= 33 lb/d all year
002Oil & GreaseDAILY MX <= 45 lb/d all year
002Copper, total [as Cu]30DA AVG <= .2182 mg/L all year
002Copper, total [as Cu]DAILY MX <= .2182 mg/L all year
002Copper, total [as Cu]30DA AVG <= .8914 lb/d all year
002Copper, total [as Cu]DAILY MX <= .8914 lb/d all year
002Iron, total [as Fe]30DA AVG <= 8.1 mg/L all year
002Iron, total [as Fe]DAILY MX <= 8.1 mg/L all year
002Iron, total [as Fe]30DA AVG <= 33.1 lb/d all year
002Iron, total [as Fe]DAILY MX <= 33.1 lb/d all year
002Toxicity [acute], Ceriodaphnia dubiaDAILY MX <= 1 N=0;Y=1 all year
002Toxicity [acute], Pimephales promelas [Fathead Minnow]DAILY MX <= 1 N=0;Y=1 all year
005Copper, total [as Cu]30DA AVG <= 1 mg/L all year
005Copper, total [as Cu]DAILY MX <= 1 mg/L all year
005Iron, total [as Fe]30DA AVG <= 1 mg/L all year
005Iron, 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