IOWA DEPARTMENT OF NATURAL RESOURCES

NPDES permit IA0072079 · Minor NON-POTW · effective, expires 2031-02-28 · 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

9values over a limit
0required values missing, on 0 form(s)
0of 12 forms filed late

Last period with anything received: 2026-08-31. Most often over: BOD, carbonaceous [5 day, 20 C] (6), E. coli (2), Solids, total suspended (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 (64)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]DAILY MN >= 1 mg/L all year
001pHDAILY MN >= 6 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspended30DA AVG <= 80 mg/L all year
001Solids, total suspended7 DA AVG <= 120 mg/L all year
001Solids, total suspended30DA AVG <= 5.5 lb/d all year
001Solids, total suspended7 DA AVG <= 8.2 lb/d all year
001Nitrogen, ammonia total [as N]30DA AVG <= 36.9 mg/L Jan
001Nitrogen, ammonia total [as N]30DA AVG <= 31.4 mg/L Mar
001Nitrogen, ammonia total [as N]30DA AVG <= 29.8 mg/L Aug
001Nitrogen, ammonia total [as N]30DA AVG <= 27.2 mg/L Apr
001Nitrogen, ammonia total [as N]30DA AVG <= 28.2 mg/L Jun
001Nitrogen, ammonia total [as N]30DA AVG <= 27 mg/L Oct
001Nitrogen, ammonia total [as N]30DA AVG <= 25.8 mg/L Nov
001Nitrogen, ammonia total [as N]30DA AVG <= 31.7 mg/L Jul
001Nitrogen, ammonia total [as N]30DA AVG <= 27.6 mg/L Sep
001Nitrogen, ammonia total [as N]30DA AVG <= 33.2 mg/L Feb
001Nitrogen, ammonia total [as N]30DA AVG <= 28.9 mg/L May
001Nitrogen, ammonia total [as N]30DA AVG <= 27.2 mg/L Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 36.9 mg/L Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 31.4 mg/L Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 29.8 mg/L Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 27.2 mg/L Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 28.2 mg/L Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 27 mg/L Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 25.8 mg/L Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 31.7 mg/L Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 27.6 mg/L Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 33.2 mg/L Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 28.9 mg/L May
001Nitrogen, ammonia total [as N]DAILY MX <= 27.2 mg/L Dec
001Nitrogen, ammonia total [as N]30DA AVG <= 2.5 lb/d Jan
001Nitrogen, ammonia total [as N]30DA AVG <= 2.1 lb/d Mar
001Nitrogen, ammonia total [as N]30DA AVG <= 2 lb/d Aug
001Nitrogen, ammonia total [as N]30DA AVG <= 1.8 lb/d Apr
001Nitrogen, ammonia total [as N]30DA AVG <= 1.9 lb/d Jun
001Nitrogen, ammonia total [as N]30DA AVG <= 1.8 lb/d Oct
001Nitrogen, ammonia total [as N]30DA AVG <= 1.7 lb/d Nov
001Nitrogen, ammonia total [as N]30DA AVG <= 2.1 lb/d Jul
001Nitrogen, ammonia total [as N]30DA AVG <= 1.9 lb/d Sep
001Nitrogen, ammonia total [as N]30DA AVG <= 2.3 lb/d Feb
001Nitrogen, ammonia total [as N]30DA AVG <= 2 lb/d May
001Nitrogen, ammonia total [as N]30DA AVG <= 1.8 lb/d Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 2.5 lb/d Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 2.1 lb/d Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 2 lb/d Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 1.8 lb/d Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 1.9 lb/d Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 1.8 lb/d Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 1.7 lb/d Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 2.1 lb/d Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 1.9 lb/d Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 2.3 lb/d Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 2 lb/d May
001Nitrogen, ammonia total [as N]DAILY MX <= 1.8 lb/d Dec
001Chlorine, total residual30DA AVG <= .053 mg/L all year
001Chlorine, total residualDAILY MX <= .053 mg/L all year
001Chlorine, total residual30DA AVG <= .0036 lb/d all year
001Chlorine, total residualDAILY MX <= .0036 lb/d all year
001E. coli30DA AVG <= 128 #/100mL Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
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 <= 1.7 lb/d all year
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 2.7 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