CEDAR FALLS MUNICIPAL ELECTRIC UTILITY

NPDES permit IA0002534 · Minor NON-POTW · effective, expires 2027-05-31 · 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

2values over a limit
4required values missing, on 1 form(s)
0of 66 forms filed late

Last period with anything received: 2026-07-31. Most often over: Copper, total [as Cu] (2).

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 (56)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheit30DA AVG <= 89.6 deg F Jul
001Temperature, water deg. fahrenheit30DA AVG <= 84.9 deg F Oct
001Temperature, water deg. fahrenheit30DA AVG <= 71.6 deg F Dec
001Temperature, water deg. fahrenheit30DA AVG <= 87 deg F Jun
001Temperature, water deg. fahrenheit30DA AVG <= 64 deg F Jan
001Temperature, water deg. fahrenheit30DA AVG <= 89.6 deg F Aug
001Temperature, water deg. fahrenheit30DA AVG <= 82.5 deg F Apr
001Temperature, water deg. fahrenheit30DA AVG <= 80.6 deg F Nov
001Temperature, water deg. fahrenheit30DA AVG <= 75.9 deg F Mar
001Temperature, water deg. fahrenheit30DA AVG <= 64 deg F Feb
001Temperature, water deg. fahrenheit30DA AVG <= 87.9 deg F Sep
001Temperature, water deg. fahrenheit30DA AVG <= 82.5 deg F May
001Temperature, water deg. fahrenheitDAILY MX <= 89.6 deg F Jul
001Temperature, water deg. fahrenheitDAILY MX <= 89.8 deg F Oct
001Temperature, water deg. fahrenheitDAILY MX <= 90.4 deg F Dec
001Temperature, water deg. fahrenheitDAILY MX <= 89.8 deg F Jun
001Temperature, water deg. fahrenheitDAILY MX <= 90.5 deg F Jan
001Temperature, water deg. fahrenheitDAILY MX <= 89.6 deg F Aug
001Temperature, water deg. fahrenheitDAILY MX <= 89.9 deg F Apr
001Temperature, water deg. fahrenheitDAILY MX <= 90.2 deg F Nov
001Temperature, water deg. fahrenheitDAILY MX <= 90.3 deg F Mar
001Temperature, water deg. fahrenheitDAILY MX <= 90.5 deg F Feb
001Temperature, water deg. fahrenheitDAILY MX <= 89.8 deg F Sep
001Temperature, water deg. fahrenheitDAILY MX <= 89.9 deg F May
001pHDAILY MN >= 6.5 SU all year
001pHDAILY MX <= 9 SU all year
001Copper, total [as Cu]30DA AVG <= .01874 mg/L all year
001Copper, total [as Cu]DAILY MX <= .02851 mg/L all year
001Copper, total [as Cu]30DA AVG <= 1.324 lb/d all year
001Copper, total [as Cu]DAILY MX <= 2.079 lb/d all year
001Chlorine, total residual30DA AVG <= .012 mg/L all year
001Chlorine, total residualDAILY MX <= .02 mg/L all year
001Chlorine, total residual30DA AVG <= .864 lb/d all year
001Chlorine, total residualDAILY MX <= 1.469 lb/d all year
002Chromium, total [as Cr]30DA AVG <= .2 mg/L all year
002Chromium, total [as Cr]DAILY MX <= .2 mg/L all year
002Zinc, total [as Zn]30DA AVG <= 1 mg/L all year
002Zinc, total [as Zn]DAILY MX <= 1 mg/L all year
002Chlorine, free available30DA AVG <= .2 mg/L all year
002Chlorine, free availableDAILY MX <= .5 mg/L all year
002Chlorination durationDAILY MX <= 2 hr/d all year
003Solids, total suspended30DA AVG <= 30 mg/L all year
003Solids, total suspendedDAILY MX <= 100 mg/L all year
003Oil & Grease30DA AVG <= 15 mg/L all year
003Oil & GreaseDAILY MX <= 20 mg/L all year
004Solids, total suspended30DA AVG <= 30 mg/L all year
004Solids, total suspendedDAILY MX <= 100 mg/L all year
004Oil & Grease30DA AVG <= 15 mg/L all year
004Oil & GreaseDAILY MX <= 20 mg/L all year
005Solids, total suspended30DA AVG <= 30 mg/L all year
005Solids, total suspendedDAILY MX <= 100 mg/L all year
005Oil & Grease30DA AVG <= 15 mg/L all year
005Oil & GreaseDAILY MX <= 20 mg/L all year
006pHDAILY MN >= 6 SU all year
006pHDAILY MX <= 9 SU all year
006Solids, total suspendedDAILY MX <= 50 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