ILLINOIS AMERICAN WATER

NPDES permit IL0027464 · Major POTW · administratively continued, expires 2024-05-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2024-05-31 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

EPA's record, 2025-09-01 to 2026-08-31

5values over a limit
0required values missing, on 0 form(s)
0of 98 forms filed late

Last period with anything received: 2026-08-31. Most often over: Coliform, fecal general (3), Chlorine, total residual (2).

Reporting

Reports are due about 25 days after each monitoring period ends (the most common figure among IL permits in EPA's filings — check your permit).

Limits in force (105)

OutfallParameterStatisticLimitMonths
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 25 mg/L all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 5473 lb/d all year
001Solids, total suspendedWKLY AVG <= 9852 lb/d all year
001Oil & GreaseDAILY MX report only all year
001Oil & GreaseDAILY MX report only all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, total [as N]DAILY MX report only all year
001Nitrogen, ammonia total [as N]MO AVG report only all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Cyanide, total [as CN]DAILY MX report only all year
001Cyanide, total [as CN]DAILY MX report only all year
001Cyanide, free [amenable to chlorination]DAILY MX report only all year
001Cyanide, free [amenable to chlorination]DAILY MX report only all year
001Fluoride, total [as F]DAILY MX report only all year
001Fluoride, total [as F]DAILY MX report only all year
001Arsenic, total [as As]DAILY MX report only all year
001Arsenic, total [as As]DAILY MX report only all year
001Barium, total [as Ba]DAILY MX report only all year
001Barium, total [as Ba]DAILY MX report only all year
001Cadmium, total [as Cd]DAILY MX report only all year
001Cadmium, total [as Cd]DAILY MX report only all year
001Chromium, hexavalent [as Cr]DAILY MX report only all year
001Chromium, hexavalent [as Cr]DAILY MX report only all year
001Chromium, total [as Cr]DAILY MX report only all year
001Chromium, total [as Cr]DAILY MX report only all year
001Copper, total [as Cu]DAILY MX report only all year
001Copper, total [as Cu]DAILY MX report only all year
001Iron, total [as Fe]DAILY MX report only all year
001Iron, total [as Fe]DAILY MX report only all year
001Iron, dissolved [as Fe]DAILY MX report only all year
001Iron, dissolved [as Fe]DAILY MX report only all year
001Lead, total [as Pb]DAILY MX report only all year
001Lead, total [as Pb]DAILY MX report only all year
001Manganese, total [as Mn]DAILY MX report only all year
001Manganese, total [as Mn]DAILY MX report only all year
001Nickel, total [as Ni]DAILY MX report only all year
001Nickel, total [as Ni]DAILY MX report only all year
001Silver, total [as Ag]DAILY MX report only all year
001Silver, total [as Ag]DAILY MX report only all year
001Zinc, total [as Zn]DAILY MX report only all year
001Zinc, total [as Zn]DAILY MX report only all year
001Selenium, total [as Se]DAILY MX report only all year
001Selenium, total [as Se]DAILY MX report only all year
001Phenolics, total recoverableDAILY MX report only all year
001Phenolics, total recoverableDAILY MX report only all year
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 <= .75 mg/L May, Jun, Jul, Aug, Sep, Oct
001Chlorine, total residualDAILY MX <= .75 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Mercury, total [as Hg]DAILY MX report only all year
001Mercury, total [as Hg]DAILY MX report only all year
001Coliform, fecal generalDAILY MX <= 400 #/100mL May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 20 mg/L all year
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 40 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 4379 lb/d all year
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 8757 lb/d all year
002OverflowsMO TOTAL report only all year
003OverflowsMO TOTAL report only all year
004OverflowsMO TOTAL report only all year
007OverflowsMO TOTAL report only all year
009BOD, 5-day, 20 deg. CDAILY MX report only all year
009pHMINIMUM >= 6 SU all year
009pHMAXIMUM <= 9 SU all year
009Solids, total suspendedMO AVG <= 25 mg/L all year
009Solids, total suspendedWKLY AVG <= 45 mg/L all year
009Solids, total suspendedDAILY MX report only all year
009Solids, total suspendedMO AVG <= 5473 lb/d all year
009Solids, total suspendedWKLY AVG <= 9852 lb/d all year
009Nitrogen, total [as N]MO AVG report only all year
009Nitrogen, total [as N]DAILY MX report only all year
009Nitrogen, ammonia total [as N]MO AVG <= 1.9 mg/L Jun, Jul, Aug
009Nitrogen, ammonia total [as N]MO AVG <= 2.5 mg/L Mar, Apr, May, Sep, Oct
009Nitrogen, ammonia total [as N]DAILY MX <= 6.3 mg/L Jan, Feb, Nov, Dec
009Nitrogen, ammonia total [as N]DAILY MX <= 6.7 mg/L Jun, Jul, Aug
009Nitrogen, ammonia total [as N]DAILY MX <= 4.8 mg/L Mar, Apr, May, Sep, Oct
009Nitrogen, ammonia total [as N]MO AVG <= 416 lb/d Jun, Jul, Aug
009Nitrogen, ammonia total [as N]MO AVG <= 547 lb/d Mar, Apr, May, Sep, Oct
009Nitrogen, ammonia total [as N]DAILY MX <= 1379 lb/d Jan, Feb, Nov, Dec
009Nitrogen, ammonia total [as N]DAILY MX <= 1467 lb/d Jun, Jul, Aug
009Nitrogen, ammonia total [as N]DAILY MX <= 1051 lb/d Mar, Apr, May, Sep, Oct
009Nitrogen, ammonia total [as N]WKLY AVG <= 4.8 mg/L Jun, Jul, Aug
009Nitrogen, ammonia total [as N]WKLY AVG <= 1051 lb/d Jun, Jul, Aug
009Phosphorus, total [as P]MO AVG report only all year
009Phosphorus, total [as P]DAILY MX report only all year
009Flow, in conduit or thru treatment plantMO AVG report only all year
009Flow, in conduit or thru treatment plantDAILY MX report only all year
009Chlorine, total residualDAILY MX <= .75 mg/L May, Jun, Jul, Aug, Sep, Oct
009Chlorine, total residualDAILY MX <= .75 mg/L Jan, Feb, Mar, Apr, Nov, Dec
009Coliform, fecal generalDAILY MX <= 400 #/100mL May, Jun, Jul, Aug, Sep, Oct
009Coliform, fecal generalDAILY MX report only all year
009FlowMO TOTAL report only all year
009Effluent dilution ratioMINIMUM >= 500 % all year
009BOD, carbonaceous [5 day, 20 C]MO AVG <= 20 mg/L all year
009BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 40 mg/L all year
009BOD, carbonaceous [5 day, 20 C]MO AVG <= 4379 lb/d all year
009BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 8757 lb/d 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