CITY OF DES MOINES

NPDES permit IA0075931 · Minor NON-POTW · effective, expires 2027-04-30 · 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

2values over a limit
0required values missing, on 0 form(s)
3of 3 forms filed late

Last period with anything received: 2026-04-30. Most often over: BOD, carbonaceous [5 day, 20 C] (2).

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 (55)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]DAILY MN >= 5 mg/L all year
001pHDAILY MN >= 6.5 SU all year
001pHDAILY MX <= 9 SU all year
001Oil & Grease30DA AVG <= 10 mg/L all year
001Oil & GreaseDAILY MX <= 15 mg/L all year
001Propylene glycol, total30DA AVG <= 98 mg/L all year
001Propylene glycol, totalDAILY MX <= 150 mg/L all year
001Ethylene glycol30DA AVG <= 125 mg/L all year
001Ethylene glycolDAILY MX <= 185 mg/L all year
001BOD, carbonaceous [5 day, 20 C]30DA AVG <= 100 mg/L Apr
001BOD, carbonaceous [5 day, 20 C]30DA AVG <= 95 mg/L Jun
001BOD, carbonaceous [5 day, 20 C]30DA AVG <= 100 mg/L Oct
001BOD, carbonaceous [5 day, 20 C]30DA AVG <= 100 mg/L Mar
001BOD, carbonaceous [5 day, 20 C]30DA AVG <= 72 mg/L Jul
001BOD, carbonaceous [5 day, 20 C]30DA AVG <= 95 mg/L Aug
001BOD, carbonaceous [5 day, 20 C]30DA AVG <= 100 mg/L Dec
001BOD, carbonaceous [5 day, 20 C]30DA AVG <= 100 mg/L Jan
001BOD, carbonaceous [5 day, 20 C]30DA AVG <= 100 mg/L May
001BOD, carbonaceous [5 day, 20 C]30DA AVG <= 100 mg/L Nov
001BOD, carbonaceous [5 day, 20 C]30DA AVG <= 100 mg/L Feb
001BOD, carbonaceous [5 day, 20 C]30DA AVG <= 80 mg/L Sep
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 150 mg/L Apr
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 95 mg/L Jun
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 150 mg/L Oct
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 150 mg/L Mar
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 72 mg/L Jul
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 95 mg/L Aug
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 150 mg/L Dec
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 150 mg/L Jan
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 140 mg/L May
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 150 mg/L Nov
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 150 mg/L Feb
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 80 mg/L Sep
002Oxygen, dissolved [DO]DAILY MN >= 5 mg/L all year
002pHDAILY MN >= 6.5 SU all year
002pHDAILY MX <= 9 SU all year
002Oil & Grease30DA AVG <= 10 mg/L all year
002Oil & GreaseDAILY MX <= 15 mg/L all year
002Propylene glycol, total30DA AVG <= 98 mg/L all year
002Propylene glycol, totalDAILY MX <= 355 mg/L all year
002Ethylene glycol30DA AVG <= 185 mg/L all year
002Ethylene glycolDAILY MX <= 185 mg/L all year
002BOD, carbonaceous [5 day, 20 C]30DA AVG <= 100 mg/L all year
002BOD, carbonaceous [5 day, 20 C]DAILY MX <= 150 mg/L all year
003Oxygen, dissolved [DO]DAILY MN >= 5 mg/L all year
003pHDAILY MN >= 6.5 SU all year
003pHDAILY MX <= 9 SU all year
003Oil & Grease30DA AVG <= 10 mg/L all year
003Oil & GreaseDAILY MX <= 15 mg/L all year
003Propylene glycol, total30DA AVG <= 98 mg/L all year
003Propylene glycol, totalDAILY MX <= 355 mg/L all year
003Ethylene glycol30DA AVG <= 185 mg/L all year
003Ethylene glycolDAILY MX <= 185 mg/L all year
003BOD, carbonaceous [5 day, 20 C]30DA AVG <= 100 mg/L all year
003BOD, carbonaceous [5 day, 20 C]DAILY MX <= 150 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