CITY OF OSAGE

NPDES permit IA0032956 · Major POTW · effective, expires 2030-01-31 · 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

27values 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: Nitrogen, ammonia total [as N] (15), Copper, total [as Cu] (6), Solids, total suspended (4).

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 (86)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]DAILY MN >= 4.9 mg/L all year
001BOD, 5-day, 20 deg. C30DA AVG report only all year
001BOD, 5-day, 20 deg. CDAILY MX report only all year
001BOD, 5-day, 20 deg. C30DA AVG report only all year
001BOD, 5-day, 20 deg. CDAILY MX report only all year
001pHDAILY MN >= 6.5 SU all year
001pHDAILY MX <= 9 SU all year
001pH30DA AVG report only all year
001pHDAILY MX report only 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 <= 268 lb/d all year
001Solids, total suspended7 DA AVG <= 402 lb/d all year
001Nitrogen, total [as N]30DA AVG <= 239.2 lb/d all year
001Nitrogen, total [as N]DAILY MX <= 391.5 lb/d all year
001Nitrogen, total [as N]30DA AVG report only all year
001Nitrogen, total [as N]DAILY MX report only all year
001Nitrogen, total [as N]30DA AVG report only all year
001Nitrogen, total [as N]DAILY MX report only all year
001Nitrogen, ammonia total [as N]30DA AVG <= 3 mg/L Dec
001Nitrogen, ammonia total [as N]30DA AVG <= 1.9 mg/L Oct
001Nitrogen, ammonia total [as N]30DA AVG <= 1.6 mg/L Jun
001Nitrogen, ammonia total [as N]30DA AVG <= 1.1 mg/L Aug
001Nitrogen, ammonia total [as N]30DA AVG <= 2.1 mg/L May
001Nitrogen, ammonia total [as N]30DA AVG <= 2.5 mg/L Mar
001Nitrogen, ammonia total [as N]30DA AVG <= 1.2 mg/L Jul
001Nitrogen, ammonia total [as N]30DA AVG <= 1.8 mg/L Apr
001Nitrogen, ammonia total [as N]30DA AVG <= 2.8 mg/L Nov
001Nitrogen, ammonia total [as N]30DA AVG <= 1.3 mg/L Sep
001Nitrogen, ammonia total [as N]30DA AVG <= 4.1 mg/L Jan
001Nitrogen, ammonia total [as N]30DA AVG <= 4.7 mg/L Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 16 mg/L Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 15.8 mg/L Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 14.5 mg/L Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 16.3 mg/L Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 15.2 mg/L May
001Nitrogen, ammonia total [as N]DAILY MX <= 14.7 mg/L Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 17.6 mg/L Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 15.8 mg/L Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 14.7 mg/L Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 16.5 mg/L Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 15.3 mg/L Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 14.3 mg/L Feb
001Nitrogen, ammonia total [as N]30DA AVG <= 26 lb/d Dec
001Nitrogen, ammonia total [as N]30DA AVG <= 16.3 lb/d Oct
001Nitrogen, ammonia total [as N]30DA AVG <= 13.7 lb/d Jun
001Nitrogen, ammonia total [as N]30DA AVG <= 10 lb/d Aug
001Nitrogen, ammonia total [as N]30DA AVG <= 18.2 lb/d May
001Nitrogen, ammonia total [as N]30DA AVG <= 21.9 lb/d Mar
001Nitrogen, ammonia total [as N]30DA AVG <= 10.5 lb/d Jul
001Nitrogen, ammonia total [as N]30DA AVG <= 16 lb/d Apr
001Nitrogen, ammonia total [as N]30DA AVG <= 24.4 lb/d Nov
001Nitrogen, ammonia total [as N]30DA AVG <= 11.1 lb/d Sep
001Nitrogen, ammonia total [as N]30DA AVG <= 35.8 lb/d Jan
001Nitrogen, ammonia total [as N]30DA AVG <= 41.4 lb/d Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 143 lb/d Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 140.7 lb/d Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 129.4 lb/d Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 145.4 lb/d Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 136.1 lb/d May
001Nitrogen, ammonia total [as N]DAILY MX <= 131.7 lb/d Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 157.6 lb/d Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 140.7 lb/d Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 131.6 lb/d Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 147.8 lb/d Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 136.2 lb/d Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 127.4 lb/d Feb
001Nitrogen, Kjeldahl, total [as N]30DA AVG report only all year
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
001Nitrogen, Kjeldahl, total [as N]30DA AVG report only all year
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
001Phosphorus, total [as P]30DA AVG report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Phosphorus, total [as P]30DA AVG report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Copper, total [as Cu]30DA AVG <= .01757 mg/L all year
001Copper, total [as Cu]DAILY MX <= .027 mg/L all year
001Copper, total [as Cu]30DA AVG <= .1563 lb/d all year
001Copper, total [as Cu]DAILY MX <= .2411 lb/d all year
001E. coliGEO MEAN <= 126 #/100mL all year
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 <= 223 lb/d all year
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 357 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