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NPDES permit IL0033511 · Minor NON-POTW · administratively continued, expires 2026-07-31 · 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.

This permit expired on 2026-07-31 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

0values over a limit
0required values missing, on 0 form(s)
2of 12 forms filed late

Last period with anything received: 2026-08-31.

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 (30)

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
001BOD, 5-day, 20 deg. C30DA AVG <= 10 mg/L all year
001BOD, 5-day, 20 deg. CDAILY MX <= 20 mg/L all year
001pHMO MIN >= 6.5 SU all year
001pHMO MAX <= 9 SU all year
001Solids, total suspended30DA AVG <= 12 mg/L all year
001Solids, total suspendedDAILY MX <= 24 mg/L all year
001Nitrogen, total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
001Nitrogen, total [as N]QB report only Mar, Jun, Sep, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 2.5 mg/L Mar, Apr, May, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 2.3 mg/L Jun, Jul, Aug
001Nitrogen, ammonia total [as N]MO AVG <= 4 mg/L Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 12.4 mg/L Mar, Apr, May, Sep, Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 15 mg/L Jun, Jul, Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 5.7 mg/L Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]WKLY AVG <= 5.7 mg/L Jun, Jul, Aug
001Nitrogen, ammonia total [as N]WKLY AVG <= 6.2 mg/L Mar, Apr, May, Sep, Oct
001Phosphorus, total [as P]QRTR AVG report only Mar, Jun, Sep, Dec
001Phosphorus, total [as P]QB report only Mar, Jun, Sep, Dec
001Chloride [as Cl]QRTR AVG report only Mar, Jun, Sep, Dec
001Chloride [as Cl]QB report only Mar, Jun, Sep, Dec
001Oil and grease30DA AVG <= 15 mg/L all year
001Oil and greaseDAILY MX <= 30 mg/L 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
001Coliform, fecal generalDAILY MX <= 200 #/100mL 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