MARSHALL, CITY OF

NPDES permit IL0068365 · Minor POTW · effective, expires 2030-10-31 · EPA's file as of 2026-09-19

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

2values over a limit
33required values missing, on 5 form(s)
19of 60 forms filed late

Last period with anything received: 2026-08-31. Most often over: BOD, carbonaceous [5 day, 20 C] (1), Solids, total suspended (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 (36)

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 <= 37 mg/L all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 417 lb/d all year
001Solids, total suspendedWKLY AVG <= 507 lb/d all year
001Nitrogen, ammonia total [as N]DAILY 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 <= .05 mg/L all year
001Coliform, fecal generalDAILY MX report only May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 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 <= 281 lb/d all year
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 450 lb/d all year
002OverflowsMO TOTAL report only all year
003OverflowsMO TOTAL report only all year
004BOD, 5-day, 20 deg. CMO AVG report only all year
004BOD, 5-day, 20 deg. CWKLY AVG report only all year
004pHMINIMUM >= 6 SU all year
004pHMAXIMUM <= 9 SU all year
004Solids, total suspendedMO AVG report only all year
004Solids, total suspendedWKLY AVG report only all year
004Nitrogen, ammonia total [as N]DAILY MX report only all year
004Chlorine, total residualDAILY MX <= .75 mg/L all year
004Coliform, fecal generalDAILY MX <= 400 #/100mL all year
004Flow, 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