CASEY, CITY OF

NPDES permit IL0035084 · Minor POTW · effective, expires 2031-01-31 · 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
0required values missing, on 0 form(s)
9of 66 forms filed late

Last period with anything received: 2026-07-31. Most often over: pH (1).

Reporting

Reports are due about 25 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (93)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]MO AV MN >= 5.5 mg/L Jan, Feb, Aug, Sep, Oct, Nov, Dec
001Oxygen, dissolved [DO]MN WK AV >= 4 mg/L Jan, Feb, Aug, Sep, Oct, Nov, Dec
001Oxygen, dissolved [DO]MN WK AV >= 6 mg/L Mar, Apr, May, Jun, Jul
001Oxygen, dissolved [DO]DAILY MN >= 3.5 mg/L Jan, Feb, Aug, Sep, Oct, Nov, Dec
001Oxygen, dissolved [DO]DAILY MN >= 5 mg/L Mar, Apr, May, Jun, Jul
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 12 mg/L all year
001Solids, total suspendedDAILY MX <= 24 mg/L all year
001Solids, total suspendedMO AVG <= 150 lb/d all year
001Solids, total suspendedDAILY MX <= 300 lb/d all year
001Nitrogen, ammonia total [as N]MO AVG <= 1.6 mg/L Mar
001Nitrogen, ammonia total [as N]MO AVG <= 1.5 mg/L Apr, May, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 1.1 mg/L Jun, Jul, Aug
001Nitrogen, ammonia total [as N]MO AVG <= 3.5 mg/L Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 7.8 mg/L Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 3 mg/L Apr, May, Sep, Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 3 mg/L Jun, Jul, Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 6.9 mg/L Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 20 lb/d Mar
001Nitrogen, ammonia total [as N]MO AVG <= 19 lb/d Apr, May, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 14 lb/d Jun, Jul, Aug
001Nitrogen, ammonia total [as N]MO AVG <= 44 lb/d Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 98 lb/d Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 38 lb/d Apr, May, Sep, Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 38 lb/d Jun, Jul, Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 86 lb/d Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]WKLY AVG <= 4 mg/L Mar
001Nitrogen, ammonia total [as N]WKLY AVG <= 2.8 mg/L Jun, Jul, Aug
001Nitrogen, ammonia total [as N]WKLY AVG <= 50 lb/d Mar
001Nitrogen, ammonia total [as N]WKLY AVG <= 35 lb/d Jun, Jul, Aug
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualDAILY MX <= .05 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Chlorine, total residualDAILY MX <= .05 mg/L May, Jun, Jul, Aug, Sep, Oct
001Coliform, fecal generalDAILY MX report only May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 10 mg/L all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 20 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 125 lb/d all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 250 lb/d all year
002OverflowsMO TOTAL report only all year
003pHMINIMUM >= 6 SU all year
003pHMAXIMUM <= 9 SU all year
003Solids, total suspendedMO AVG <= 12 mg/L all year
003Solids, total suspendedDAILY MX <= 24 mg/L all year
003Solids, total suspendedMO AVG <= 14 lb/d all year
003Solids, total suspendedDAILY MX <= 29 lb/d all year
003Nitrogen, ammonia total [as N]MO AVG <= 3.5 mg/L Jan, Feb, Nov, Dec
003Nitrogen, ammonia total [as N]MO AVG <= 1.7 mg/L Mar
003Nitrogen, ammonia total [as N]MO AVG <= 1.5 mg/L Apr, May, Sep, Oct
003Nitrogen, ammonia total [as N]MO AVG <= 1.1 mg/L Jun, Jul, Aug
003Nitrogen, ammonia total [as N]DAILY MX <= 6.9 mg/L Jan, Feb, Nov, Dec
003Nitrogen, ammonia total [as N]DAILY MX <= 7.8 mg/L Mar
003Nitrogen, ammonia total [as N]DAILY MX <= 3 mg/L Apr, May, Sep, Oct
003Nitrogen, ammonia total [as N]DAILY MX <= 3 mg/L Jun, Jul, Aug
003Nitrogen, ammonia total [as N]MO AVG <= 4.8 lb/d Jan, Feb, Nov, Dec
003Nitrogen, ammonia total [as N]MO AVG <= 2 lb/d Mar
003Nitrogen, ammonia total [as N]MO AVG <= 1.8 lb/d Apr, May, Sep, Oct
003Nitrogen, ammonia total [as N]MO AVG <= 1.3 lb/d Jun, Jul, Aug
003Nitrogen, ammonia total [as N]DAILY MX <= 9.6 lb/d Jan, Feb, Nov, Dec
003Nitrogen, ammonia total [as N]DAILY MX <= 9.4 lb/d Mar
003Nitrogen, ammonia total [as N]DAILY MX <= 3.6 lb/d Apr, May, Sep, Oct
003Nitrogen, ammonia total [as N]DAILY MX <= 3.6 lb/d Jun, Jul, Aug
003Nitrogen, ammonia total [as N]WKLY AVG <= 2.8 mg/L Jun, Jul, Aug
003Nitrogen, ammonia total [as N]WKLY AVG <= 4.2 mg/L Mar
003Nitrogen, ammonia total [as N]WKLY AVG <= 3.4 lb/d Jun, Jul, Aug
003Nitrogen, ammonia total [as N]WKLY AVG <= 5 lb/d Mar
003Flow, in conduit or thru treatment plantMO AVG report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
003Chlorine, total residualMO AVG <= .75 mg/L all year
003Coliform, fecal generalDAILY MX <= 400 #/100mL all year
003BOD, carbonaceous [5 day, 20 C]MO AVG <= 10 mg/L all year
003BOD, carbonaceous [5 day, 20 C]DAILY MX <= 20 mg/L all year
003BOD, carbonaceous [5 day, 20 C]MO AVG <= 12 lb/d all year
003BOD, carbonaceous [5 day, 20 C]DAILY MX <= 24 lb/d all year
004BOD, 5-day, 20 deg. CMO AVG report only all year
004pHMINIMUM >= 6 SU all year
004pHMAXIMUM <= 9 SU all year
004Solids, total suspendedMO AVG report only all year
004Chlorine, total residualMO AVG <= .75 mg/L all year
004Coliform, fecal generalDAILY MX <= 400 #/100mL all year
004Flow, totalMO TOTAL report only all year
A01BOD, 5-day, 20 deg. CMO AVG report only all year
A01pHMINIMUM >= 6 SU all year
A01pHMAXIMUM <= 9 SU all year
A01Solids, total suspendedMO AVG report only all year
A01Chlorine, total residualMO AVG <= .75 mg/L all year
A01Coliform, fecal generalDAILY MX <= 400 #/100mL all year
A01Flow, totalMO TOTAL report only all year
INFBOD, 5-day, 20 deg. CMO AVG report only all year
INFSolids, total suspendedMO AVG report only all year
INFFlow, in conduit or thru treatment plantMO AVG report only all year
INFFlow, in conduit or thru treatment plantDAILY MX report only 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