GILBERTS, VILLAGE OF

NPDES permit IL0068764 · Major POTW · effective, expires 2028-02-29 · 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

3values over a limit
0required values missing, on 0 form(s)
6of 24 forms filed late

Last period with anything received: 2026-07-31. Most often over: Nitrogen, ammonia total [as N] (2), 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 (212)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitMO MAX report only all year
001Temperature, water deg. fahrenheitMO MAX report only all year
001Oxygen, dissolved [DO]MO AV MN >= 6 mg/L Jan, Feb, Aug, Sep, Oct, Nov, Dec
001Oxygen, dissolved [DO]MO AV MN >= 6 mg/L Jan, Feb, Aug, Sep, Oct, Nov, Dec
001Oxygen, dissolved [DO]MN WK AV >= 4.5 mg/L Jan, Feb, Aug, Sep, Oct, Nov, Dec
001Oxygen, dissolved [DO]MN WK AV >= 4.5 mg/L Jan, Feb, Aug, Sep, Oct, Nov, Dec
001Oxygen, dissolved [DO]MN WK AV >= 6.25 mg/L Mar, Apr, May, Jun, Jul
001Oxygen, dissolved [DO]MN WK AV >= 6.25 mg/L Mar, Apr, May, Jun, Jul
001Oxygen, dissolved [DO]DAILY MN >= 4 mg/L Jan, Feb, Aug, Sep, Oct, Nov, Dec
001Oxygen, dissolved [DO]DAILY MN >= 4 mg/L Jan, Feb, Aug, Sep, Oct, Nov, Dec
001Oxygen, dissolved [DO]DAILY MN >= 5 mg/L Mar, Apr, May, Jun, Jul
001Oxygen, dissolved [DO]DAILY MN >= 5 mg/L Mar, Apr, May, Jun, Jul
001pHMINIMUM >= 6 SU all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001pHMAXIMUM <= 9 SU all year
001Alkalinity, total [as CaCO3]DAILY MX report only all year
001Alkalinity, total [as CaCO3]DAILY MX report only all year
001Solids, total suspendedMO AVG <= 12 mg/L all year
001Solids, total suspendedMO AVG <= 12 mg/L all year
001Solids, total suspendedDAILY MX <= 24 mg/L all year
001Solids, total suspendedDAILY MX <= 24 mg/L all year
001Solids, total suspendedMO AVG <= 200 lb/d all year
001Solids, total suspendedMO AVG <= 200 lb/d all year
001Solids, total suspendedDAILY MX <= 400 lb/d all year
001Solids, total suspendedDAILY MX <= 400 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]MO AVG report only all year
001Nitrogen, total [as N]DAILY MX report only all year
001Nitrogen, total [as N]DAILY MX report only all year
001Nitrogen, ammonia total [as N]MO AVG <= 1.5 mg/L May
001Nitrogen, ammonia total [as N]MO AVG <= 1.5 mg/L May
001Nitrogen, ammonia total [as N]MO AVG <= 1.5 mg/L Apr
001Nitrogen, ammonia total [as N]MO AVG <= 1.5 mg/L Apr
001Nitrogen, ammonia total [as N]MO AVG <= 4 mg/L Jan
001Nitrogen, ammonia total [as N]MO AVG <= 4 mg/L Jan
001Nitrogen, ammonia total [as N]MO AVG <= 1.4 mg/L Jun
001Nitrogen, ammonia total [as N]MO AVG <= 1.4 mg/L Jun
001Nitrogen, ammonia total [as N]MO AVG <= 1.4 mg/L Aug
001Nitrogen, ammonia total [as N]MO AVG <= 1.4 mg/L Aug
001Nitrogen, ammonia total [as N]MO AVG <= 4 mg/L Dec
001Nitrogen, ammonia total [as N]MO AVG <= 4 mg/L Dec
001Nitrogen, ammonia total [as N]MO AVG <= 1.5 mg/L Sep
001Nitrogen, ammonia total [as N]MO AVG <= 1.5 mg/L Sep
001Nitrogen, ammonia total [as N]MO AVG <= 4 mg/L Feb
001Nitrogen, ammonia total [as N]MO AVG <= 4 mg/L Feb
001Nitrogen, ammonia total [as N]MO AVG <= 1.4 mg/L Jul
001Nitrogen, ammonia total [as N]MO AVG <= 1.4 mg/L Jul
001Nitrogen, ammonia total [as N]MO AVG <= 1.5 mg/L Mar
001Nitrogen, ammonia total [as N]MO AVG <= 1.5 mg/L Mar
001Nitrogen, ammonia total [as N]MO AVG <= 1.5 mg/L Oct
001Nitrogen, ammonia total [as N]MO AVG <= 1.5 mg/L Oct
001Nitrogen, ammonia total [as N]MO AVG <= 4 mg/L Nov
001Nitrogen, ammonia total [as N]MO AVG <= 4 mg/L Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 3 mg/L May
001Nitrogen, ammonia total [as N]DAILY MX <= 3 mg/L May
001Nitrogen, ammonia total [as N]DAILY MX <= 3 mg/L Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 3 mg/L Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 7.5 mg/L Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 7.5 mg/L Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 3 mg/L Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 3 mg/L Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 3 mg/L Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 3 mg/L Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 7.5 mg/L Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 7.5 mg/L Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 3 mg/L Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 3 mg/L Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 7.5 mg/L Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 7.5 mg/L Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 3 mg/L Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 3 mg/L Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 6.7 mg/L Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 6.7 mg/L Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 3 mg/L Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 3 mg/L Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 7.5 mg/L Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 7.5 mg/L Nov
001Nitrogen, ammonia total [as N]MO AVG <= 25 lb/d May
001Nitrogen, ammonia total [as N]MO AVG <= 25 lb/d May
001Nitrogen, ammonia total [as N]MO AVG <= 25 lb/d Apr
001Nitrogen, ammonia total [as N]MO AVG <= 25 lb/d Apr
001Nitrogen, ammonia total [as N]MO AVG <= 67 lb/d Jan
001Nitrogen, ammonia total [as N]MO AVG <= 67 lb/d Jan
001Nitrogen, ammonia total [as N]MO AVG <= 23 lb/d Jun
001Nitrogen, ammonia total [as N]MO AVG <= 23 lb/d Jun
001Nitrogen, ammonia total [as N]MO AVG <= 23 lb/d Aug
001Nitrogen, ammonia total [as N]MO AVG <= 23 lb/d Aug
001Nitrogen, ammonia total [as N]MO AVG <= 67 lb/d Dec
001Nitrogen, ammonia total [as N]MO AVG <= 67 lb/d Dec
001Nitrogen, ammonia total [as N]MO AVG <= 25 lb/d Sep
001Nitrogen, ammonia total [as N]MO AVG <= 25 lb/d Sep
001Nitrogen, ammonia total [as N]MO AVG <= 67 lb/d Feb
001Nitrogen, ammonia total [as N]MO AVG <= 67 lb/d Feb
001Nitrogen, ammonia total [as N]MO AVG <= 23 lb/d Jul
001Nitrogen, ammonia total [as N]MO AVG <= 23 lb/d Jul
001Nitrogen, ammonia total [as N]MO AVG <= 25 lb/d Mar
001Nitrogen, ammonia total [as N]MO AVG <= 25 lb/d Mar
001Nitrogen, ammonia total [as N]MO AVG <= 25 lb/d Oct
001Nitrogen, ammonia total [as N]MO AVG <= 25 lb/d Oct
001Nitrogen, ammonia total [as N]MO AVG <= 67 lb/d Nov
001Nitrogen, ammonia total [as N]MO AVG <= 67 lb/d Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 50 lb/d May
001Nitrogen, ammonia total [as N]DAILY MX <= 50 lb/d May
001Nitrogen, ammonia total [as N]DAILY MX <= 50 lb/d Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 50 lb/d Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 125 lb/d Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 125 lb/d Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 50 lb/d Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 50 lb/d Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 50 lb/d Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 50 lb/d Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 125 lb/d Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 125 lb/d Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 50 lb/d Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 50 lb/d Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 125 lb/d Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 125 lb/d Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 50 lb/d Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 50 lb/d Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 112 lb/d Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 112 lb/d Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 50 lb/d Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 50 lb/d Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 125 lb/d Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 125 lb/d Nov
001Nitrogen, ammonia total [as N]WKLY AVG <= 3.8 mg/L Mar
001Nitrogen, ammonia total [as N]WKLY AVG <= 3.8 mg/L Mar
001Nitrogen, ammonia total [as N]WKLY AVG <= 63 lb/d Mar
001Nitrogen, ammonia total [as N]WKLY AVG <= 63 lb/d Mar
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
001Nitrite + Nitrate total [as N]DAILY MX report only all year
001Nitrite + Nitrate total [as N]DAILY MX report only all year
001Phosphorus, total [as P]MO AVG <= 1 mg/L all year
001Phosphorus, total [as P]MO AVG <= 1 mg/L all year
001Phosphorus, total [as P]DAILY MX report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Phosphorus, total [as P]MO AVG <= 17 lb/d all year
001Phosphorus, total [as P]MO AVG <= 17 lb/d all year
001Phosphorus, total [as P]DAILY MX report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Phosphorus, dissolvedDAILY MX report only all year
001Phosphorus, dissolvedDAILY 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 plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualDAILY MX <= .038 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Chlorine, total residualDAILY MX <= .038 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Chlorine, total residualDAILY MX <= .038 mg/L May, Jun, Jul, Aug, Sep, Oct
001Chlorine, total residualDAILY MX <= .038 mg/L May, Jun, Jul, Aug, Sep, Oct
001Mercury, total [as Hg]MO AVG report only all year
001Mercury, total [as Hg]MO AVG report only all year
001Mercury, total [as Hg]DAILY MX report only all year
001Mercury, total [as Hg]DAILY MX report only all year
001Mercury, total [as Hg]ANNL AVG <= 12 ng/L all year
001Mercury, total [as Hg]ANNL AVG <= 12 ng/L all year
001Mercury, total [as Hg]ANNL AVG <= .1 lb/d all year
001Mercury, total [as Hg]ANNL AVG <= .1 lb/d all year
001Coliform, fecal generalDAILY MX <= 400 #/100mL May, Jun, Jul, Aug, Sep, Oct
001Coliform, fecal generalDAILY MX <= 400 #/100mL 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]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]DAILY MX <= 20 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 167 lb/d all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 167 lb/d all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 334 lb/d all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 334 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

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