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NPDES permit IA0070033 · Minor NON-POTW · effective, expires 2029-09-30 · 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

1values over a limit
15required values missing, on 1 form(s)
1of 12 forms filed late

Last period with anything received: 2026-08-31. Most often over: Phenols (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 (15)

OutfallParameterStatisticLimitMonths
002pHDAILY MN >= 6.5 SU all year
002pH30DA AVG <= 9 SU all year
002Solids, total suspended30DA AVG <= 80 mg/L all year
002Solids, total suspended7 DA AVG <= 120 mg/L all year
002Chloride [as Cl]30DA AVG <= 389 mg/L all year
002Chloride [as Cl]DAILY MX <= 629 mg/L all year
002Atrazine30DA AVG <= 1.125 mg/L all year
002AtrazineDAILY MX <= 1.125 mg/L all year
002Metolachlor30DA AVG <= 1.5 mg/L all year
002MetolachlorDAILY MX <= 1.5 mg/L all year
002Phenols30DA AVG <= .05 mg/L all year
002PhenolsDAILY MX <= 2.5 mg/L all year
002Annual Nitrate Nitrogen DischargedDAILY MX <= 1241 lb/yr all year
002BOD, carbonaceous [5 day, 20 C]30DA AVG <= 25 mg/L all year
002BOD, 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