CITY OF ESTHERVILLE

NPDES permit IA0023744 · Major POTW · administratively continued, expires 2025-12-31 · 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 2025-12-31 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

6values 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: Chlorine, total residual (6).

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 (82)

OutfallParameterStatisticLimitMonths
001Nitrogen, ammonia per cfs of streamflow30DA AVG <= 13.2 lb/CFS/d Dec
001Nitrogen, ammonia per cfs of streamflow30DA AVG <= 6.9 lb/CFS/d Jun
001Nitrogen, ammonia per cfs of streamflow30DA AVG <= 5 lb/CFS/d Aug
001Nitrogen, ammonia per cfs of streamflow30DA AVG <= 5.3 lb/CFS/d Jul
001Nitrogen, ammonia per cfs of streamflow30DA AVG <= 9.2 lb/CFS/d May
001Nitrogen, ammonia per cfs of streamflow30DA AVG <= 20.9 lb/CFS/d Feb
001Nitrogen, ammonia per cfs of streamflow30DA AVG <= 8.3 lb/CFS/d Oct
001Nitrogen, ammonia per cfs of streamflow30DA AVG <= 8 lb/CFS/d Apr
001Nitrogen, ammonia per cfs of streamflow30DA AVG <= 5.6 lb/CFS/d Sep
001Nitrogen, ammonia per cfs of streamflow30DA AVG <= 12.4 lb/CFS/d Nov
001Nitrogen, ammonia per cfs of streamflow30DA AVG <= 18.2 lb/CFS/d Jan
001Nitrogen, ammonia per cfs of streamflow30DA AVG <= 10.7 lb/CFS/d Mar
001Nitrogen, ammonia per cfs of streamflowDAILY MX <= 4.1 lb/CFS/d Dec
001Nitrogen, ammonia per cfs of streamflowDAILY MX <= 3.7 lb/CFS/d Jun
001Nitrogen, ammonia per cfs of streamflowDAILY MX <= 4.3 lb/CFS/d Aug
001Nitrogen, ammonia per cfs of streamflowDAILY MX <= 4.7 lb/CFS/d Jul
001Nitrogen, ammonia per cfs of streamflowDAILY MX <= 3.9 lb/CFS/d May
001Nitrogen, ammonia per cfs of streamflowDAILY MX <= 3.7 lb/CFS/d Feb
001Nitrogen, ammonia per cfs of streamflowDAILY MX <= 4.1 lb/CFS/d Oct
001Nitrogen, ammonia per cfs of streamflowDAILY MX <= 4.1 lb/CFS/d Apr
001Nitrogen, ammonia per cfs of streamflowDAILY MX <= 4.3 lb/CFS/d Sep
001Nitrogen, ammonia per cfs of streamflowDAILY MX <= 3.8 lb/CFS/d Nov
001Nitrogen, ammonia per cfs of streamflowDAILY MX <= 3.9 lb/CFS/d Jan
001Nitrogen, ammonia per cfs of streamflowDAILY MX <= 3.8 lb/CFS/d Mar
001Oxygen, dissolved [DO]DAILY MN >= 5 mg/L all year
001BOD, 5-day, 20 deg. C30DA AVG report only all year
001BOD, 5-day, 20 deg. CDAILY MX report only all year
001BOD, 5-day, 20 deg. C30DA AVG report only all year
001BOD, 5-day, 20 deg. CDAILY MX report only all year
001pHDAILY MN >= 6.5 SU all year
001pHDAILY MX <= 9 SU all year
001pH30DA AVG report only all year
001pHDAILY MX report only all year
001Solids, total suspended30DA AVG <= 30 mg/L all year
001Solids, total suspended7 DA AVG <= 45 mg/L all year
001Solids, total suspended30DA AVG <= 876 lb/d all year
001Solids, total suspended7 DA AVG <= 1314 lb/d all year
001Solids, total suspended30DA AVG report only all year
001Solids, total suspendedDAILY MX report only all year
001Solids, total suspended30DA AVG report only all year
001Solids, total suspendedDAILY MX report only all year
001Nitrogen, total [as N]30DA AVG report only all year
001Nitrogen, total [as N]DAILY MX report only all year
001Nitrogen, total [as N]30DA AVG report only all year
001Nitrogen, total [as N]DAILY MX report only all year
001Nitrogen, total [as N]30DA AVG report only all year
001Nitrogen, total [as N]DAILY MX report only all year
001Nitrogen, total [as N]30DA AVG report only all year
001Nitrogen, total [as N]DAILY MX report only all year
001Nitrogen, ammonia total [as N]30DA AVG report only all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Nitrogen, ammonia total [as N]30DA AVG report only all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Nitrogen, nitrate total [as N]30DA AVG <= 1174 lb/d all year
001Nitrogen, nitrate total [as N]DAILY MX <= 1922 lb/d all year
001Nitrogen, Kjeldahl, total [as N]30DA AVG report only all year
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
001Nitrogen, Kjeldahl, total [as N]30DA AVG report only all year
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
001Phosphorus, total [as P]30DA AVG report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Phosphorus, total [as P]30DA AVG report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Phosphorus, total [as P]30DA AVG report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Phosphorus, total [as P]30DA AVG report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Copper, total [as Cu]30DA AVG <= .01968 mg/L all year
001Copper, total [as Cu]DAILY MX <= .0273 mg/L all year
001Copper, total [as Cu]30DA AVG <= .5743 lb/d all year
001Copper, total [as Cu]DAILY MX <= .7969 lb/d all year
001Chlorine, total residual30DA AVG <= .009 mg/L all year
001Chlorine, total residualDAILY MX <= .019 mg/L all year
001Chlorine, total residual30DA AVG <= .255 lb/d all year
001Chlorine, total residualDAILY MX <= .563 lb/d all year
001E. coliGEO MEAN <= 126 #/100mL Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
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
001BOD, carbonaceous [5 day, 20 C]30DA AVG <= 25 mg/L all year
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 40 mg/L all year
001BOD, carbonaceous [5 day, 20 C]30DA AVG <= 730 lb/d all year
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 1168 lb/d 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