IOWA DEPARTMENT OF NATURAL RESOURCES

NPDES permit IA0075400 · Minor NON-POTW · effective, expires 2031-02-28 · 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

7values over a limit
8required values missing, on 1 form(s)
0of 11 forms filed late

Last period with anything received: 2026-07-31. Most often over: Nitrogen, ammonia total [as N] (4), Chlorine, total residual (3).

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 <= 3.7 lb/d all year
001Solids, total suspended7 DA AVG <= 5.6 lb/d all year
001Nitrogen, ammonia total [as N]30DA AVG <= 3.3 mg/L Mar
001Nitrogen, ammonia total [as N]30DA AVG <= 4.7 mg/L Dec
001Nitrogen, ammonia total [as N]30DA AVG <= 1.5 mg/L Aug
001Nitrogen, ammonia total [as N]30DA AVG <= 5.9 mg/L Jan
001Nitrogen, ammonia total [as N]30DA AVG <= 1.6 mg/L Jul
001Nitrogen, ammonia total [as N]30DA AVG <= 2.7 mg/L Apr
001Nitrogen, ammonia total [as N]30DA AVG <= 2.6 mg/L May
001Nitrogen, ammonia total [as N]30DA AVG <= 1.9 mg/L Jun
001Nitrogen, ammonia total [as N]30DA AVG <= 4.2 mg/L Feb
001Nitrogen, ammonia total [as N]30DA AVG <= 2.5 mg/L Sep
001Nitrogen, ammonia total [as N]30DA AVG <= 3.7 mg/L Oct
001Nitrogen, ammonia total [as N]30DA AVG <= 4.2 mg/L Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 10.1 mg/L Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 9.9 mg/L Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 6.9 mg/L Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 13.8 mg/L Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 8.3 mg/L Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 8.9 mg/L Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 8.3 mg/L May
001Nitrogen, ammonia total [as N]DAILY MX <= 8.3 mg/L Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 17 mg/L Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 6.9 mg/L Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 6.9 mg/L Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 6.9 mg/L Nov
001Nitrogen, ammonia total [as N]30DA AVG <= .2 lb/d Mar
001Nitrogen, ammonia total [as N]30DA AVG <= .2 lb/d Dec
001Nitrogen, ammonia total [as N]30DA AVG <= .1 lb/d Aug
001Nitrogen, ammonia total [as N]30DA AVG <= .3 lb/d Jan
001Nitrogen, ammonia total [as N]30DA AVG <= .1 lb/d Jul
001Nitrogen, ammonia total [as N]30DA AVG <= .1 lb/d Apr
001Nitrogen, ammonia total [as N]30DA AVG <= .1 lb/d May
001Nitrogen, ammonia total [as N]30DA AVG <= .1 lb/d Jun
001Nitrogen, ammonia total [as N]30DA AVG <= .2 lb/d Feb
001Nitrogen, ammonia total [as N]30DA AVG <= .1 lb/d Sep
001Nitrogen, ammonia total [as N]30DA AVG <= .2 lb/d Oct
001Nitrogen, ammonia total [as N]30DA AVG <= .2 lb/d Nov
001Nitrogen, ammonia total [as N]DAILY MX <= .5 lb/d Mar
001Nitrogen, ammonia total [as N]DAILY MX <= .5 lb/d Dec
001Nitrogen, ammonia total [as N]DAILY MX <= .3 lb/d Aug
001Nitrogen, ammonia total [as N]DAILY MX <= .6 lb/d Jan
001Nitrogen, ammonia total [as N]DAILY MX <= .4 lb/d Jul
001Nitrogen, ammonia total [as N]DAILY MX <= .4 lb/d Apr
001Nitrogen, ammonia total [as N]DAILY MX <= .4 lb/d May
001Nitrogen, ammonia total [as N]DAILY MX <= .4 lb/d Jun
001Nitrogen, ammonia total [as N]DAILY MX <= .8 lb/d Feb
001Nitrogen, ammonia total [as N]DAILY MX <= .3 lb/d Sep
001Nitrogen, ammonia total [as N]DAILY MX <= .3 lb/d Oct
001Nitrogen, ammonia total [as N]DAILY MX <= .3 lb/d Nov
001Chlorine, total residual30DA AVG <= .053 mg/L all year
001Chlorine, total residualDAILY MX <= .053 mg/L all year
001Chlorine, total residual30DA AVG <= .002 lb/d all year
001Chlorine, total residualDAILY MX <= .002 lb/d all year
001E. coliGEO MEAN <= 135 #/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 <= 1.2 lb/d all year
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 1.9 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