CITY OF HAWKEYE

NPDES permit IA0036072 · Minor POTW · effective, expires 2030-12-31 · 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

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

Last period with anything received: 2026-07-31.

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 (55)

OutfallParameterStatisticLimitMonths
004pHDAILY MN >= 6.5 SU all year
004pHDAILY MX <= 9 SU all year
004Solids, total suspended30DA AVG <= 80 mg/L all year
004Solids, total suspended7 DA AVG <= 120 mg/L all year
004Nitrogen, ammonia total [as N]30DA AVG <= 1.2 mg/L Sep
004Nitrogen, ammonia total [as N]30DA AVG <= 4.3 mg/L Feb
004Nitrogen, ammonia total [as N]30DA AVG <= 1 mg/L Aug
004Nitrogen, ammonia total [as N]30DA AVG <= 1.1 mg/L Jul
004Nitrogen, ammonia total [as N]30DA AVG <= 1.5 mg/L Jun
004Nitrogen, ammonia total [as N]30DA AVG <= 2.7 mg/L Nov
004Nitrogen, ammonia total [as N]30DA AVG <= 2.3 mg/L Apr
004Nitrogen, ammonia total [as N]30DA AVG <= 3.1 mg/L Dec
004Nitrogen, ammonia total [as N]30DA AVG <= 2.1 mg/L May
004Nitrogen, ammonia total [as N]30DA AVG <= 1.9 mg/L Oct
004Nitrogen, ammonia total [as N]30DA AVG <= 3.7 mg/L Jan
004Nitrogen, ammonia total [as N]30DA AVG <= 3.7 mg/L Mar
004Nitrogen, ammonia total [as N]DAILY MX <= 2.7 mg/L Sep
004Nitrogen, ammonia total [as N]DAILY MX <= 8.4 mg/L Feb
004Nitrogen, ammonia total [as N]DAILY MX <= 2.7 mg/L Aug
004Nitrogen, ammonia total [as N]DAILY MX <= 3.2 mg/L Jul
004Nitrogen, ammonia total [as N]DAILY MX <= 3.2 mg/L Jun
004Nitrogen, ammonia total [as N]DAILY MX <= 2.7 mg/L Nov
004Nitrogen, ammonia total [as N]DAILY MX <= 4.8 mg/L Apr
004Nitrogen, ammonia total [as N]DAILY MX <= 3.9 mg/L Dec
004Nitrogen, ammonia total [as N]DAILY MX <= 3.2 mg/L May
004Nitrogen, ammonia total [as N]DAILY MX <= 2.7 mg/L Oct
004Nitrogen, ammonia total [as N]DAILY MX <= 19.9 mg/L Jan
004Nitrogen, ammonia total [as N]DAILY MX <= 3.9 mg/L Mar
004Nitrogen, ammonia total [as N]30DA AVG <= 6.8 lb/d Sep
004Nitrogen, ammonia total [as N]30DA AVG <= 25.5 lb/d Feb
004Nitrogen, ammonia total [as N]30DA AVG <= 6.2 lb/d Aug
004Nitrogen, ammonia total [as N]30DA AVG <= 6.5 lb/d Jul
004Nitrogen, ammonia total [as N]30DA AVG <= 8.8 lb/d Jun
004Nitrogen, ammonia total [as N]30DA AVG <= 15.9 lb/d Nov
004Nitrogen, ammonia total [as N]30DA AVG <= 13.6 lb/d Apr
004Nitrogen, ammonia total [as N]30DA AVG <= 18.3 lb/d Dec
004Nitrogen, ammonia total [as N]30DA AVG <= 12.2 lb/d May
004Nitrogen, ammonia total [as N]30DA AVG <= 11.5 lb/d Oct
004Nitrogen, ammonia total [as N]30DA AVG <= 22 lb/d Jan
004Nitrogen, ammonia total [as N]30DA AVG <= 21.9 lb/d Mar
004Nitrogen, ammonia total [as N]DAILY MX <= 15.8 lb/d Sep
004Nitrogen, ammonia total [as N]DAILY MX <= 50 lb/d Feb
004Nitrogen, ammonia total [as N]DAILY MX <= 15.9 lb/d Aug
004Nitrogen, ammonia total [as N]DAILY MX <= 19.1 lb/d Jul
004Nitrogen, ammonia total [as N]DAILY MX <= 19.2 lb/d Jun
004Nitrogen, ammonia total [as N]DAILY MX <= 15.9 lb/d Nov
004Nitrogen, ammonia total [as N]DAILY MX <= 28.1 lb/d Apr
004Nitrogen, ammonia total [as N]DAILY MX <= 23.2 lb/d Dec
004Nitrogen, ammonia total [as N]DAILY MX <= 19.2 lb/d May
004Nitrogen, ammonia total [as N]DAILY MX <= 15.9 lb/d Oct
004Nitrogen, ammonia total [as N]DAILY MX <= 118.1 lb/d Jan
004Nitrogen, ammonia total [as N]DAILY MX <= 23.2 lb/d Mar
004E. coliGEO MEAN <= 229 #/100mL Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
004BOD, carbonaceous [5 day, 20 C]30DA AVG <= 25 mg/L all year
004BOD, 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