CITY OF DUNKERTON

NPDES permit IA0042790 · Minor POTW · effective, expires 2028-06-30 · EPA's file as of 2026-09-19

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

7values 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: Nitrogen, ammonia total [as N] (6), pH (1).

Reporting

Reports are due about 15 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (54)

OutfallParameterStatisticLimitMonths
001pHDAILY MN >= 6.4 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
001Nitrogen, ammonia total [as N]30DA AVG <= 2.1 mg/L Jul
001Nitrogen, ammonia total [as N]30DA AVG <= 7.1 mg/L Jan
001Nitrogen, ammonia total [as N]30DA AVG <= 5.4 mg/L Apr
001Nitrogen, ammonia total [as N]30DA AVG <= 4.1 mg/L Jun
001Nitrogen, ammonia total [as N]30DA AVG <= 2.9 mg/L Nov
001Nitrogen, ammonia total [as N]30DA AVG <= 2.2 mg/L Sep
001Nitrogen, ammonia total [as N]30DA AVG <= 4.2 mg/L Mar
001Nitrogen, ammonia total [as N]30DA AVG <= 4.1 mg/L May
001Nitrogen, ammonia total [as N]30DA AVG <= 2.9 mg/L Oct
001Nitrogen, ammonia total [as N]30DA AVG <= 2 mg/L Aug
001Nitrogen, ammonia total [as N]30DA AVG <= 8.1 mg/L Feb
001Nitrogen, ammonia total [as N]30DA AVG <= 4.2 mg/L Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 3.4 mg/L Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 20.3 mg/L Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 5.4 mg/L Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 4.1 mg/L Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 2.9 mg/L Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 2.8 mg/L Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 4.2 mg/L Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 4.1 mg/L May
001Nitrogen, ammonia total [as N]DAILY MX <= 2.9 mg/L Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 2.9 mg/L Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 8.7 mg/L Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 4.2 mg/L Dec
001Nitrogen, ammonia total [as N]30DA AVG <= 29.6 lb/d Jul
001Nitrogen, ammonia total [as N]30DA AVG <= 101.1 lb/d Jan
001Nitrogen, ammonia total [as N]30DA AVG <= 77.7 lb/d Apr
001Nitrogen, ammonia total [as N]30DA AVG <= 58.6 lb/d Jun
001Nitrogen, ammonia total [as N]30DA AVG <= 42.1 lb/d Nov
001Nitrogen, ammonia total [as N]30DA AVG <= 31.2 lb/d Sep
001Nitrogen, ammonia total [as N]30DA AVG <= 59.6 lb/d Mar
001Nitrogen, ammonia total [as N]30DA AVG <= 58.5 lb/d May
001Nitrogen, ammonia total [as N]30DA AVG <= 42.1 lb/d Oct
001Nitrogen, ammonia total [as N]30DA AVG <= 28.1 lb/d Aug
001Nitrogen, ammonia total [as N]30DA AVG <= 116.4 lb/d Feb
001Nitrogen, ammonia total [as N]30DA AVG <= 59.6 lb/d Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 49.2 lb/d Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 290.4 lb/d Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 77.7 lb/d Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 58.6 lb/d Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 42.1 lb/d Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 40.7 lb/d Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 59.6 lb/d Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 58.5 lb/d May
001Nitrogen, ammonia total [as N]DAILY MX <= 42.1 lb/d Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 41.4 lb/d Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 125.1 lb/d Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 59.6 lb/d Dec
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

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