CITY OF ALGONA

NPDES permit IA0022055 · Major POTW · effective, expires 2028-02-29 · 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)
0of 11 forms filed late

Last period with anything received: 2026-07-31. Most often over: Copper, total [as Cu] (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 (68)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]DAILY MN >= 3.8 mg/L all year
001pHDAILY MN >= 6.2 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspended30DA AVG <= 30 mg/L all year
001Solids, total suspended7 DA AVG <= 45 mg/L all year
001Solids, total suspended30DA AVG <= 651 lb/d all year
001Solids, total suspended7 DA AVG <= 976 lb/d all year
001Nitrogen, ammonia total [as N]30DA AVG <= 4.2 mg/L Aug
001Nitrogen, ammonia total [as N]30DA AVG <= 6.7 mg/L Apr
001Nitrogen, ammonia total [as N]30DA AVG <= 4.7 mg/L Jun
001Nitrogen, ammonia total [as N]30DA AVG <= 15.1 mg/L Jan
001Nitrogen, ammonia total [as N]30DA AVG <= 6.9 mg/L Oct
001Nitrogen, ammonia total [as N]30DA AVG <= 10.9 mg/L Dec
001Nitrogen, ammonia total [as N]30DA AVG <= 8.9 mg/L Mar
001Nitrogen, ammonia total [as N]30DA AVG <= 4.4 mg/L Jul
001Nitrogen, ammonia total [as N]30DA AVG <= 16.8 mg/L Feb
001Nitrogen, ammonia total [as N]30DA AVG <= 10.3 mg/L Nov
001Nitrogen, ammonia total [as N]30DA AVG <= 7.2 mg/L May
001Nitrogen, ammonia total [as N]30DA AVG <= 4.6 mg/L Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 18.4 mg/L Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 17.6 mg/L Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 16.5 mg/L Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 17.6 mg/L Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 17.6 mg/L Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 17.9 mg/L Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 17 mg/L Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 19.9 mg/L Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 16.8 mg/L Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 16.5 mg/L Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 17.3 mg/L May
001Nitrogen, ammonia total [as N]DAILY MX <= 18.5 mg/L Sep
001Nitrogen, ammonia total [as N]30DA AVG <= 56.2 lb/d Aug
001Nitrogen, ammonia total [as N]30DA AVG <= 89.8 lb/d Apr
001Nitrogen, ammonia total [as N]30DA AVG <= 66.5 lb/d Jun
001Nitrogen, ammonia total [as N]30DA AVG <= 202.5 lb/d Jan
001Nitrogen, ammonia total [as N]30DA AVG <= 92.1 lb/d Oct
001Nitrogen, ammonia total [as N]30DA AVG <= 146.6 lb/d Dec
001Nitrogen, ammonia total [as N]30DA AVG <= 120.6 lb/d Mar
001Nitrogen, ammonia total [as N]30DA AVG <= 59.2 lb/d Jul
001Nitrogen, ammonia total [as N]30DA AVG <= 232.8 lb/d Feb
001Nitrogen, ammonia total [as N]30DA AVG <= 137.7 lb/d Nov
001Nitrogen, ammonia total [as N]30DA AVG <= 98.6 lb/d May
001Nitrogen, ammonia total [as N]30DA AVG <= 62.3 lb/d Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 225.5 lb/d Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 362.4 lb/d Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 336 lb/d Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 355.9 lb/d Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 362.4 lb/d Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 368.3 lb/d Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 344.2 lb/d Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 245 lb/d Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 337 lb/d Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 339.2 lb/d Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 352.9 lb/d May
001Nitrogen, ammonia total [as N]DAILY MX <= 344.8 lb/d Sep
001Nitrogen, nitrate total [as N]30DA AVG <= 435 lb/d all year
001Nitrogen, nitrate total [as N]DAILY MX <= 712 lb/d all year
001Copper, total [as Cu]30DA AVG <= .04127 mg/L all year
001Copper, total [as Cu]DAILY MX <= .04127 mg/L all year
001Copper, total [as Cu]30DA AVG <= .7416 lb/d all year
001Copper, total [as Cu]DAILY MX <= .7416 lb/d all year
001E. coliGEO MEAN <= 126 #/100mL Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001Toxicity [acute], Ceriodaphnia dubiaDAILY MX <= 1 N=0;Y=1 all year
001Toxicity [acute], Pimephales promelas [Fathead Minnow]DAILY MX <= 1 N=0;Y=1 all year
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
001BOD, carbonaceous [5 day, 20 C]30DA AVG <= 542 lb/d all year
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 867 lb/d 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