CITY OF IRETON

NPDES permit IA0027961 · Minor POTW · effective, expires 2028-09-30 · EPA's file as of 2026-09-19

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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
0required values missing, on 0 form(s)
0of 12 forms filed late

Last period with anything received: 2026-08-31. Most often over: Nitrogen, ammonia total [as N] (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 (54)

OutfallParameterStatisticLimitMonths
003pHDAILY MN >= 6.5 SU all year
003pHDAILY MX <= 9 SU all year
003Solids, total suspended30DA AVG <= 80 mg/L all year
003Solids, total suspended7 DA AVG <= 120 mg/L all year
003Nitrogen, ammonia total [as N]30DA AVG <= 3.8 mg/L Mar
003Nitrogen, ammonia total [as N]30DA AVG <= 1.9 mg/L May
003Nitrogen, ammonia total [as N]30DA AVG <= 2.7 mg/L Dec
003Nitrogen, ammonia total [as N]30DA AVG <= 1.1 mg/L Aug
003Nitrogen, ammonia total [as N]30DA AVG <= 1.2 mg/L Sep
003Nitrogen, ammonia total [as N]30DA AVG <= 3.8 mg/L Jan
003Nitrogen, ammonia total [as N]30DA AVG <= 2.6 mg/L Nov
003Nitrogen, ammonia total [as N]30DA AVG <= 1.7 mg/L Oct
003Nitrogen, ammonia total [as N]30DA AVG <= 1.5 mg/L Jun
003Nitrogen, ammonia total [as N]30DA AVG <= 4.4 mg/L Feb
003Nitrogen, ammonia total [as N]30DA AVG <= 1.7 mg/L Apr
003Nitrogen, ammonia total [as N]30DA AVG <= 1.1 mg/L Jul
003Nitrogen, ammonia total [as N]DAILY MX <= 3.9 mg/L Mar
003Nitrogen, ammonia total [as N]DAILY MX <= 3.2 mg/L May
003Nitrogen, ammonia total [as N]DAILY MX <= 3.9 mg/L Dec
003Nitrogen, ammonia total [as N]DAILY MX <= 2.7 mg/L Aug
003Nitrogen, ammonia total [as N]DAILY MX <= 2.7 mg/L Sep
003Nitrogen, ammonia total [as N]DAILY MX <= 19.9 mg/L Jan
003Nitrogen, ammonia total [as N]DAILY MX <= 2.7 mg/L Nov
003Nitrogen, ammonia total [as N]DAILY MX <= 2.7 mg/L Oct
003Nitrogen, ammonia total [as N]DAILY MX <= 3.2 mg/L Jun
003Nitrogen, ammonia total [as N]DAILY MX <= 8.5 mg/L Feb
003Nitrogen, ammonia total [as N]DAILY MX <= 4.7 mg/L Apr
003Nitrogen, ammonia total [as N]DAILY MX <= 3.2 mg/L Jul
003Nitrogen, ammonia total [as N]30DA AVG <= 18.2 lb/d Mar
003Nitrogen, ammonia total [as N]30DA AVG <= 9.3 lb/d May
003Nitrogen, ammonia total [as N]30DA AVG <= 13.3 lb/d Dec
003Nitrogen, ammonia total [as N]30DA AVG <= 5.1 lb/d Aug
003Nitrogen, ammonia total [as N]30DA AVG <= 5.7 lb/d Sep
003Nitrogen, ammonia total [as N]30DA AVG <= 18.3 lb/d Jan
003Nitrogen, ammonia total [as N]30DA AVG <= 12.5 lb/d Nov
003Nitrogen, ammonia total [as N]30DA AVG <= 8.4 lb/d Oct
003Nitrogen, ammonia total [as N]30DA AVG <= 7 lb/d Jun
003Nitrogen, ammonia total [as N]30DA AVG <= 21.2 lb/d Feb
003Nitrogen, ammonia total [as N]30DA AVG <= 8.2 lb/d Apr
003Nitrogen, ammonia total [as N]30DA AVG <= 5.4 lb/d Jul
003Nitrogen, ammonia total [as N]DAILY MX <= 19 lb/d Mar
003Nitrogen, ammonia total [as N]DAILY MX <= 15.7 lb/d May
003Nitrogen, ammonia total [as N]DAILY MX <= 18.9 lb/d Dec
003Nitrogen, ammonia total [as N]DAILY MX <= 13 lb/d Aug
003Nitrogen, ammonia total [as N]DAILY MX <= 13 lb/d Sep
003Nitrogen, ammonia total [as N]DAILY MX <= 96.5 lb/d Jan
003Nitrogen, ammonia total [as N]DAILY MX <= 13 lb/d Nov
003Nitrogen, ammonia total [as N]DAILY MX <= 13 lb/d Oct
003Nitrogen, ammonia total [as N]DAILY MX <= 15.7 lb/d Jun
003Nitrogen, ammonia total [as N]DAILY MX <= 40.9 lb/d Feb
003Nitrogen, ammonia total [as N]DAILY MX <= 22.9 lb/d Apr
003Nitrogen, ammonia total [as N]DAILY MX <= 15.7 lb/d Jul
003BOD, carbonaceous [5 day, 20 C]30DA AVG <= 25 mg/L all year
003BOD, 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