Stepan Company — NPDES permit IL0002453: limits, due date and EPA's record

Surface Active Agents, major discharger, Elwood, Illinois. NPDES permit IL0002453 expired May 31, 2019; its limits still apply. Last 12 months: over a limit 5 times (last August 2026), 1 of 14 reports late. Source: EPA ECHO, Oct 22, 2026.

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period ending	Parameter	Reported	Limit	Over by
October 2025	BOD, 5-day, 20 deg. C, daily maximum	507.9 lb/d	≤ 334 lb/d	52%
October 2025	BOD, 5-day, 20 deg. C, daily maximum	58 mg/L	≤ 40 mg/L	45%
February 2026	Solids, total suspended, daily maximum	455.4 lb/d	≤ 417 lb/d	9%
February 2026	Solids, total suspended, daily maximum	56 mg/L	≤ 50 mg/L	12%
August 2026	Chlorine, total residual, daily maximum	.15 mg/L	≤ .05 mg/L	200%

Limits in force (514)

Parameter	Statistic	Limit	Months
Temperature, water deg. fahrenheit	monthly maximum	≤ 100 deg F	all year
BOD, 5-day, 20 deg. C	30-day average	≤ 20 mg/L	all year
BOD, 5-day, 20 deg. C	daily maximum	≤ 40 mg/L	all year
BOD, 5-day, 20 deg. C	30-day average	≤ 167 lb/d	all year
BOD, 5-day, 20 deg. C	daily maximum	≤ 334 lb/d	all year
pH	monthly minimum	≥ 6 SU	all year
pH	monthly maximum	≤ 9 SU	all year
Solids, total suspended	30-day average	≤ 25 mg/L	all year
Solids, total suspended	daily maximum	≤ 50 mg/L	all year
Solids, total suspended	30-day average	≤ 209 lb/d	all year
Solids, total suspended	daily maximum	≤ 417 lb/d	all year
Cyanide, total [as CN]	30-day average	≤ .1 mg/L	all year
Cyanide, total [as CN]	30-day average	≤ .1 mg/L	all year
Cyanide, total [as CN]	daily maximum	≤ .2 mg/L	all year
Cyanide, total [as CN]	daily maximum	≤ .2 mg/L	all year
Cyanide, total [as CN]	30-day average	≤ .83 lb/d	all year
Cyanide, total [as CN]	30-day average	≤ .83 lb/d	all year
Cyanide, total [as CN]	daily maximum	≤ 1.7 lb/d	all year
Cyanide, total [as CN]	daily maximum	≤ 1.7 lb/d	all year
Chromium, total [as Cr]	30-day average	≤ 1 mg/L	all year
Chromium, total [as Cr]	30-day average	≤ 1 mg/L	all year
Chromium, total [as Cr]	daily maximum	≤ 2 mg/L	all year
Chromium, total [as Cr]	daily maximum	≤ 2 mg/L	all year
Chromium, total [as Cr]	30-day average	≤ 7.9 lb/d	all year
Chromium, total [as Cr]	30-day average	≤ 7.9 lb/d	all year
Chromium, total [as Cr]	daily maximum	≤ 17 lb/d	all year
Chromium, total [as Cr]	daily maximum	≤ 17 lb/d	all year
Copper, total [as Cu]	30-day average	≤ .5 mg/L	all year
Copper, total [as Cu]	30-day average	≤ .5 mg/L	all year
Copper, total [as Cu]	daily maximum	≤ 1 mg/L	all year
Copper, total [as Cu]	daily maximum	≤ 1 mg/L	all year
Copper, total [as Cu]	30-day average	≤ 4.2 lb/d	all year
Copper, total [as Cu]	30-day average	≤ 4.2 lb/d	all year
Copper, total [as Cu]	daily maximum	≤ 8.3 lb/d	all year
Copper, total [as Cu]	daily maximum	≤ 8.3 lb/d	all year
Lead, total [as Pb]	30-day average	≤ .2 mg/L	all year
Lead, total [as Pb]	30-day average	≤ .2 mg/L	all year
Lead, total [as Pb]	daily maximum	≤ .4 mg/L	all year
Lead, total [as Pb]	daily maximum	≤ .4 mg/L	all year
Lead, total [as Pb]	30-day average	≤ 1.67 lb/d	all year
Lead, total [as Pb]	30-day average	≤ 1.67 lb/d	all year
Lead, total [as Pb]	daily maximum	≤ 3.3 lb/d	all year
Lead, total [as Pb]	daily maximum	≤ 3.3 lb/d	all year
Nickel, total [as Ni]	30-day average	≤ 1 mg/L	all year
Nickel, total [as Ni]	30-day average	≤ 1 mg/L	all year
Nickel, total [as Ni]	daily maximum	≤ 2 mg/L	all year
Nickel, total [as Ni]	daily maximum	≤ 2 mg/L	all year
Nickel, total [as Ni]	30-day average	≤ 8.3 lb/d	all year
Nickel, total [as Ni]	30-day average	≤ 8.3 lb/d	all year
Nickel, total [as Ni]	daily maximum	≤ 17 lb/d	all year
Nickel, total [as Ni]	daily maximum	≤ 17 lb/d	all year
Zinc, total [as Zn]	30-day average	≤ 1 mg/L	all year
Zinc, total [as Zn]	30-day average	≤ 1 mg/L	all year
Zinc, total [as Zn]	daily maximum	≤ 2 mg/L	all year
Zinc, total [as Zn]	daily maximum	≤ 2 mg/L	all year
Zinc, total [as Zn]	30-day average	≤ 7.4 lb/d	all year
Zinc, total [as Zn]	30-day average	≤ 7.4 lb/d	all year
Zinc, total [as Zn]	daily maximum	≤ 17 lb/d	all year
Zinc, total [as Zn]	daily maximum	≤ 17 lb/d	all year
Oil and grease	30-day average	≤ 15 mg/L	all year
Oil and grease	daily maximum	≤ 30 mg/L	all year
Carbon tetrachloride	30-day average	≤ .02 mg/L	all year
Carbon tetrachloride	30-day average	≤ .02 mg/L	all year
Carbon tetrachloride	daily maximum	≤ .04 mg/L	all year
Carbon tetrachloride	daily maximum	≤ .04 mg/L	all year
Carbon tetrachloride	30-day average	≤ .13 lb/d	all year
Carbon tetrachloride	30-day average	≤ .13 lb/d	all year
Carbon tetrachloride	daily maximum	≤ .27 lb/d	all year
Carbon tetrachloride	daily maximum	≤ .27 lb/d	all year
Chloroform	30-day average	≤ .02 mg/L	all year
Chloroform	30-day average	≤ .02 mg/L	all year
Chloroform	daily maximum	≤ .05 mg/L	all year
Chloroform	daily maximum	≤ .05 mg/L	all year
Chloroform	30-day average	≤ .15 lb/d	all year
Chloroform	30-day average	≤ .15 lb/d	all year
Chloroform	daily maximum	≤ .32 lb/d	all year
Chloroform	daily maximum	≤ .32 lb/d	all year
Toluene	30-day average	≤ .03 mg/L	all year
Toluene	30-day average	≤ .03 mg/L	all year
Toluene	daily maximum	≤ .08 mg/L	all year
Toluene	daily maximum	≤ .08 mg/L	all year
Toluene	30-day average	≤ .18 lb/d	all year
Toluene	30-day average	≤ .18 lb/d	all year
Toluene	daily maximum	≤ .56 lb/d	all year
Toluene	daily maximum	≤ .56 lb/d	all year
Benzene	30-day average	≤ .04 mg/L	all year
Benzene	30-day average	≤ .04 mg/L	all year
Benzene	daily maximum	≤ .14 mg/L	all year
Benzene	daily maximum	≤ .14 mg/L	all year
Benzene	30-day average	≤ .26 lb/d	all year
Benzene	30-day average	≤ .26 lb/d	all year
Benzene	daily maximum	≤ .96 lb/d	all year
Benzene	daily maximum	≤ .96 lb/d	all year
Acenaphthylene	30-day average	≤ .02 mg/L	all year
Acenaphthylene	30-day average	≤ .02 mg/L	all year
Acenaphthylene	daily maximum	≤ .06 mg/L	all year
Acenaphthylene	daily maximum	≤ .06 mg/L	all year
Acenaphthylene	30-day average	≤ .16 lb/d	all year
Acenaphthylene	30-day average	≤ .16 lb/d	all year
Acenaphthylene	daily maximum	≤ .42 lb/d	all year
Acenaphthylene	daily maximum	≤ .42 lb/d	all year
Acenaphthene	30-day average	≤ .02 mg/L	all year
Acenaphthene	30-day average	≤ .02 mg/L	all year
Acenaphthene	daily maximum	≤ .06 mg/L	all year
Acenaphthene	daily maximum	≤ .06 mg/L	all year
Acenaphthene	30-day average	≤ .16 lb/d	all year
Acenaphthene	30-day average	≤ .16 lb/d	all year
Acenaphthene	daily maximum	≤ .42 lb/d	all year
Acenaphthene	daily maximum	≤ .42 lb/d	all year
Acrylonitrile	30-day average	≤ .1 mg/L	all year
Acrylonitrile	30-day average	≤ .1 mg/L	all year
Acrylonitrile	daily maximum	≤ .24 mg/L	all year
Acrylonitrile	daily maximum	≤ .24 mg/L	all year
Acrylonitrile	30-day average	≤ .68 lb/d	all year
Acrylonitrile	30-day average	≤ .68 lb/d	all year
Acrylonitrile	daily maximum	≤ 1.71 lb/d	all year
Acrylonitrile	daily maximum	≤ 1.71 lb/d	all year
Anthracene	30-day average	≤ .02 mg/L	all year
Anthracene	30-day average	≤ .02 mg/L	all year
Anthracene	daily maximum	≤ .06 mg/L	all year
Anthracene	daily maximum	≤ .06 mg/L	all year
Anthracene	30-day average	≤ .16 lb/d	all year
Anthracene	30-day average	≤ .16 lb/d	all year
Anthracene	daily maximum	≤ .42 lb/d	all year
Anthracene	daily maximum	≤ .42 lb/d	all year
Benzo[k]fluoranthene	30-day average	≤ .02 mg/L	all year
Benzo[k]fluoranthene	30-day average	≤ .02 mg/L	all year
Benzo[k]fluoranthene	daily maximum	≤ .06 mg/L	all year
Benzo[k]fluoranthene	daily maximum	≤ .06 mg/L	all year
Benzo[k]fluoranthene	30-day average	≤ .16 lb/d	all year
Benzo[k]fluoranthene	30-day average	≤ .16 lb/d	all year
Benzo[k]fluoranthene	daily maximum	≤ .42 lb/d	all year
Benzo[k]fluoranthene	daily maximum	≤ .42 lb/d	all year
Benzo[a]pyrene	30-day average	≤ .02 mg/L	all year
Benzo[a]pyrene	30-day average	≤ .02 mg/L	all year
Benzo[a]pyrene	daily maximum	≤ .06 mg/L	all year
Benzo[a]pyrene	daily maximum	≤ .06 mg/L	all year
Benzo[a]pyrene	30-day average	≤ .16 lb/d	all year
Benzo[a]pyrene	30-day average	≤ .16 lb/d	all year
Benzo[a]pyrene	daily maximum	≤ .43 lb/d	all year
Benzo[a]pyrene	daily maximum	≤ .43 lb/d	all year
Chlorobenzene	30-day average	≤ .02 mg/L	all year
Chlorobenzene	30-day average	≤ .02 mg/L	all year
Chlorobenzene	daily maximum	≤ .03 mg/L	all year
Chlorobenzene	daily maximum	≤ .03 mg/L	all year
Chlorobenzene	30-day average	≤ .11 lb/d	all year
Chlorobenzene	30-day average	≤ .11 lb/d	all year
Chlorobenzene	daily maximum	≤ .2 lb/d	all year
Chlorobenzene	daily maximum	≤ .2 lb/d	all year
Chrysene	30-day average	≤ .02 mg/L	all year
Chrysene	30-day average	≤ .02 mg/L	all year
Chrysene	daily maximum	≤ .06 mg/L	all year
Chrysene	daily maximum	≤ .06 mg/L	all year
Chrysene	30-day average	≤ .16 lb/d	all year
Chrysene	30-day average	≤ .16 lb/d	all year
Chrysene	daily maximum	≤ .42 lb/d	all year
Chrysene	daily maximum	≤ .42 lb/d	all year
Diethyl phthalate	30-day average	≤ .08 mg/L	all year
Diethyl phthalate	30-day average	≤ .08 mg/L	all year
Diethyl phthalate	daily maximum	≤ .2 mg/L	all year
Diethyl phthalate	daily maximum	≤ .2 mg/L	all year
Diethyl phthalate	30-day average	≤ .57 lb/d	all year
Diethyl phthalate	30-day average	≤ .57 lb/d	all year
Diethyl phthalate	daily maximum	≤ 1.43 lb/d	all year
Diethyl phthalate	daily maximum	≤ 1.43 lb/d	all year
Dimethyl phthalate	30-day average	≤ .02 mg/L	all year
Dimethyl phthalate	30-day average	≤ .02 mg/L	all year
Dimethyl phthalate	daily maximum	≤ .05 mg/L	all year
Dimethyl phthalate	daily maximum	≤ .05 mg/L	all year
Dimethyl phthalate	30-day average	≤ .13 lb/d	all year
Dimethyl phthalate	30-day average	≤ .13 lb/d	all year
Dimethyl phthalate	daily maximum	≤ .33 lb/d	all year
Dimethyl phthalate	daily maximum	≤ .33 lb/d	all year
Ethylbenzene	30-day average	≤ .03 mg/L	all year
Ethylbenzene	30-day average	≤ .03 mg/L	all year
Ethylbenzene	daily maximum	≤ .11 mg/L	all year
Ethylbenzene	daily maximum	≤ .11 mg/L	all year
Ethylbenzene	30-day average	≤ .23 lb/d	all year
Ethylbenzene	30-day average	≤ .23 lb/d	all year
Ethylbenzene	daily maximum	≤ .76 lb/d	all year
Ethylbenzene	daily maximum	≤ .76 lb/d	all year
Fluoranthene	30-day average	≤ .03 mg/L	all year
Fluoranthene	30-day average	≤ .03 mg/L	all year
Fluoranthene	daily maximum	≤ .07 mg/L	all year
Fluoranthene	daily maximum	≤ .07 mg/L	all year
Fluoranthene	30-day average	≤ .18 lb/d	all year
Fluoranthene	30-day average	≤ .18 lb/d	all year
Fluoranthene	daily maximum	≤ .48 lb/d	all year
Fluoranthene	daily maximum	≤ .48 lb/d	all year
Fluorene	30-day average	≤ .02 mg/L	all year
Fluorene	30-day average	≤ .02 mg/L	all year
Fluorene	daily maximum	≤ .06 mg/L	all year
Fluorene	daily maximum	≤ .06 mg/L	all year
Fluorene	30-day average	≤ .16 lb/d	all year
Fluorene	30-day average	≤ .16 lb/d	all year
Fluorene	daily maximum	≤ .42 lb/d	all year
Fluorene	daily maximum	≤ .42 lb/d	all year
Hexachloroethane	30-day average	≤ .02 mg/L	all year
Hexachloroethane	30-day average	≤ .02 mg/L	all year
Hexachloroethane	daily maximum	≤ .05 mg/L	all year
Hexachloroethane	daily maximum	≤ .05 mg/L	all year
Hexachloroethane	30-day average	≤ .15 lb/d	all year
Hexachloroethane	30-day average	≤ .15 lb/d	all year
Hexachloroethane	daily maximum	≤ .38 lb/d	all year
Hexachloroethane	daily maximum	≤ .38 lb/d	all year
Methyl chloride [Chloromethane]	30-day average	≤ .09 mg/L	all year
Methyl chloride [Chloromethane]	30-day average	≤ .09 mg/L	all year
Methyl chloride [Chloromethane]	daily maximum	≤ .19 mg/L	all year
Methyl chloride [Chloromethane]	daily maximum	≤ .19 mg/L	all year
Methyl chloride [Chloromethane]	30-day average	≤ .61 lb/d	all year
Methyl chloride [Chloromethane]	30-day average	≤ .61 lb/d	all year
Methyl chloride [Chloromethane]	daily maximum	≤ 1.34 lb/d	all year
Methyl chloride [Chloromethane]	daily maximum	≤ 1.34 lb/d	all year
Methylene chloride	30-day average	≤ .04 mg/L	all year
Methylene chloride	30-day average	≤ .04 mg/L	all year
Methylene chloride	daily maximum	≤ .09 mg/L	all year
Methylene chloride	daily maximum	≤ .09 mg/L	all year
Methylene chloride	30-day average	≤ .28 lb/d	all year
Methylene chloride	30-day average	≤ .28 lb/d	all year
Methylene chloride	daily maximum	≤ .63 lb/d	all year
Methylene chloride	daily maximum	≤ .63 lb/d	all year
Nitrobenzene	30-day average	≤ .03 mg/L	all year
Nitrobenzene	30-day average	≤ .03 mg/L	all year
Nitrobenzene	daily maximum	≤ .07 mg/L	all year
Nitrobenzene	daily maximum	≤ .07 mg/L	all year
Nitrobenzene	30-day average	≤ .19 lb/d	all year
Nitrobenzene	30-day average	≤ .19 lb/d	all year
Nitrobenzene	daily maximum	≤ .48 lb/d	all year
Nitrobenzene	daily maximum	≤ .48 lb/d	all year
Phenanthrene	30-day average	≤ .02 mg/L	all year
Phenanthrene	30-day average	≤ .02 mg/L	all year
Phenanthrene	daily maximum	≤ .06 mg/L	all year
Phenanthrene	daily maximum	≤ .06 mg/L	all year
Phenanthrene	30-day average	≤ .16 lb/d	all year
Phenanthrene	30-day average	≤ .16 lb/d	all year
Phenanthrene	daily maximum	≤ .42 lb/d	all year
Phenanthrene	daily maximum	≤ .42 lb/d	all year
Pyrene	30-day average	≤ .03 mg/L	all year
Pyrene	30-day average	≤ .03 mg/L	all year
Pyrene	daily maximum	≤ .07 mg/L	all year
Pyrene	daily maximum	≤ .07 mg/L	all year
Pyrene	30-day average	≤ .18 lb/d	all year
Pyrene	30-day average	≤ .18 lb/d	all year
Pyrene	daily maximum	≤ .47 lb/d	all year
Pyrene	daily maximum	≤ .47 lb/d	all year
1,1-Dichloroethane	30-day average	≤ .02 mg/L	all year
1,1-Dichloroethane	30-day average	≤ .02 mg/L	all year
1,1-Dichloroethane	daily maximum	≤ .06 mg/L	all year
1,1-Dichloroethane	daily maximum	≤ .06 mg/L	all year
1,1-Dichloroethane	30-day average	≤ .16 lb/d	all year
1,1-Dichloroethane	30-day average	≤ .16 lb/d	all year
1,1-Dichloroethane	daily maximum	≤ .42 lb/d	all year
1,1-Dichloroethane	daily maximum	≤ .42 lb/d	all year
1,1-Dichloroethylene	30-day average	≤ .02 mg/L	all year
1,1-Dichloroethylene	30-day average	≤ .02 mg/L	all year
1,1-Dichloroethylene	daily maximum	≤ .03 mg/L	all year
1,1-Dichloroethylene	daily maximum	≤ .03 mg/L	all year
1,1-Dichloroethylene	30-day average	≤ .11 lb/d	all year
1,1-Dichloroethylene	30-day average	≤ .11 lb/d	all year
1,1-Dichloroethylene	daily maximum	≤ .18 lb/d	all year
1,1-Dichloroethylene	daily maximum	≤ .18 lb/d	all year
1,1,1-Trichloroethane	30-day average	≤ .02 mg/L	all year
1,1,1-Trichloroethane	30-day average	≤ .02 mg/L	all year
1,1,1-Trichloroethane	daily maximum	≤ .05 mg/L	all year
1,1,1-Trichloroethane	daily maximum	≤ .05 mg/L	all year
1,1,1-Trichloroethane	30-day average	≤ .15 lb/d	all year
1,1,1-Trichloroethane	30-day average	≤ .15 lb/d	all year
1,1,1-Trichloroethane	daily maximum	≤ .38 lb/d	all year
1,1,1-Trichloroethane	daily maximum	≤ .38 lb/d	all year
1,1,2-Trichloroethane	30-day average	≤ .02 mg/L	all year
1,1,2-Trichloroethane	30-day average	≤ .02 mg/L	all year
1,1,2-Trichloroethane	daily maximum	≤ .05 mg/L	all year
1,1,2-Trichloroethane	daily maximum	≤ .05 mg/L	all year
1,1,2-Trichloroethane	30-day average	≤ .15 lb/d	all year
1,1,2-Trichloroethane	30-day average	≤ .15 lb/d	all year
1,1,2-Trichloroethane	daily maximum	≤ .38 lb/d	all year
1,1,2-Trichloroethane	daily maximum	≤ .38 lb/d	all year
Benzo[a]anthracene	30-day average	≤ .02 mg/L	all year
Benzo[a]anthracene	30-day average	≤ .02 mg/L	all year
Benzo[a]anthracene	daily maximum	≤ .06 mg/L	all year
Benzo[a]anthracene	daily maximum	≤ .06 mg/L	all year
Benzo[a]anthracene	30-day average	≤ .16 lb/d	all year
Benzo[a]anthracene	30-day average	≤ .16 lb/d	all year
Benzo[a]anthracene	daily maximum	≤ .42 lb/d	all year
Benzo[a]anthracene	daily maximum	≤ .42 lb/d	all year
1,2-Dichloroethane, total weight	30-day average	≤ .07 mg/L	all year
1,2-Dichloroethane, total weight	30-day average	≤ .07 mg/L	all year
1,2-Dichloroethane, total weight	daily maximum	≤ .21 mg/L	all year
1,2-Dichloroethane, total weight	daily maximum	≤ .21 mg/L	all year
1,2-Dichloroethane, total weight	30-day average	≤ .48 lb/d	all year
1,2-Dichloroethane, total weight	30-day average	≤ .48 lb/d	all year
1,2-Dichloroethane, total weight	daily maximum	≤ 1.49 lb/d	all year
1,2-Dichloroethane, total weight	daily maximum	≤ 1.49 lb/d	all year
1,2-Dichlorobenzene	30-day average	≤ .08 mg/L	all year
1,2-Dichlorobenzene	30-day average	≤ .08 mg/L	all year
1,2-Dichlorobenzene	daily maximum	≤ .16 mg/L	all year
1,2-Dichlorobenzene	daily maximum	≤ .16 mg/L	all year
1,2-Dichlorobenzene	30-day average	≤ .54 lb/d	all year
1,2-Dichlorobenzene	30-day average	≤ .54 lb/d	all year
1,2-Dichlorobenzene	daily maximum	≤ 1.15 lb/d	all year
1,2-Dichlorobenzene	daily maximum	≤ 1.15 lb/d	all year
1,2-Dichloropropane	30-day average	≤ .15 mg/L	all year
1,2-Dichloropropane	30-day average	≤ .15 mg/L	all year
1,2-Dichloropropane	daily maximum	≤ .23 mg/L	all year
1,2-Dichloropropane	daily maximum	≤ .23 mg/L	all year
1,2-Dichloropropane	30-day average	≤ 1.08 lb/d	all year
1,2-Dichloropropane	30-day average	≤ 1.08 lb/d	all year
1,2-Dichloropropane	daily maximum	≤ 1.62 lb/d	all year
1,2-Dichloropropane	daily maximum	≤ 1.62 lb/d	all year
trans-1,2-Dichloroethylene	30-day average	≤ .02 mg/L	all year
trans-1,2-Dichloroethylene	30-day average	≤ .02 mg/L	all year
trans-1,2-Dichloroethylene	daily maximum	≤ .05 mg/L	all year
trans-1,2-Dichloroethylene	daily maximum	≤ .05 mg/L	all year
trans-1,2-Dichloroethylene	30-day average	≤ .15 lb/d	all year
trans-1,2-Dichloroethylene	30-day average	≤ .15 lb/d	all year
trans-1,2-Dichloroethylene	daily maximum	≤ .38 lb/d	all year
trans-1,2-Dichloroethylene	daily maximum	≤ .38 lb/d	all year
1,2,4-Trichlorobenzene	30-day average	≤ .07 mg/L	all year
1,2,4-Trichlorobenzene	30-day average	≤ .07 mg/L	all year
1,2,4-Trichlorobenzene	daily maximum	≤ .14 mg/L	all year
1,2,4-Trichlorobenzene	daily maximum	≤ .14 mg/L	all year
1,2,4-Trichlorobenzene	30-day average	≤ .48 lb/d	all year
1,2,4-Trichlorobenzene	30-day average	≤ .48 lb/d	all year
1,2,4-Trichlorobenzene	daily maximum	≤ .99 lb/d	all year
1,2,4-Trichlorobenzene	daily maximum	≤ .99 lb/d	all year
1,3-Dichloropropene, total weight	30-day average	≤ .03 mg/L	all year
1,3-Dichloropropene, total weight	30-day average	≤ .03 mg/L	all year
1,3-Dichloropropene, total weight	daily maximum	≤ .04 mg/L	all year
1,3-Dichloropropene, total weight	daily maximum	≤ .04 mg/L	all year
1,3-Dichloropropene, total weight	30-day average	≤ .2 lb/d	all year
1,3-Dichloropropene, total weight	30-day average	≤ .2 lb/d	all year
1,3-Dichloropropene, total weight	daily maximum	≤ .31 lb/d	all year
1,3-Dichloropropene, total weight	daily maximum	≤ .31 lb/d	all year
1,3-Dichlorobenzene	30-day average	≤ .03 mg/L	all year
1,3-Dichlorobenzene	30-day average	≤ .03 mg/L	all year
1,3-Dichlorobenzene	daily maximum	≤ .04 mg/L	all year
1,3-Dichlorobenzene	daily maximum	≤ .04 mg/L	all year
1,3-Dichlorobenzene	30-day average	≤ .22 lb/d	all year
1,3-Dichlorobenzene	30-day average	≤ .22 lb/d	all year
1,3-Dichlorobenzene	daily maximum	≤ .31 lb/d	all year
1,3-Dichlorobenzene	daily maximum	≤ .31 lb/d	all year
1,4-Dichlorobenzene	30-day average	≤ .02 mg/L	all year
1,4-Dichlorobenzene	30-day average	≤ .02 mg/L	all year
1,4-Dichlorobenzene	daily maximum	≤ .03 mg/L	all year
1,4-Dichlorobenzene	daily maximum	≤ .03 mg/L	all year
1,4-Dichlorobenzene	30-day average	≤ .11 lb/d	all year
1,4-Dichlorobenzene	30-day average	≤ .11 lb/d	all year
1,4-Dichlorobenzene	daily maximum	≤ .2 lb/d	all year
1,4-Dichlorobenzene	daily maximum	≤ .2 lb/d	all year
2-Chlorophenol	30-day average	≤ .03 mg/L	all year
2-Chlorophenol	30-day average	≤ .03 mg/L	all year
2-Chlorophenol	daily maximum	≤ .1 mg/L	all year
2-Chlorophenol	daily maximum	≤ .1 mg/L	all year
2-Chlorophenol	30-day average	≤ .22 lb/d	all year
2-Chlorophenol	30-day average	≤ .22 lb/d	all year
2-Chlorophenol	daily maximum	≤ .69 lb/d	all year
2-Chlorophenol	daily maximum	≤ .69 lb/d	all year
2-Nitrophenol	30-day average	≤ .04 mg/L	all year
2-Nitrophenol	30-day average	≤ .04 mg/L	all year
2-Nitrophenol	daily maximum	≤ .07 mg/L	all year
2-Nitrophenol	daily maximum	≤ .07 mg/L	all year
2-Nitrophenol	30-day average	≤ .29 lb/d	all year
2-Nitrophenol	30-day average	≤ .29 lb/d	all year
2-Nitrophenol	daily maximum	≤ .49 lb/d	all year
2-Nitrophenol	daily maximum	≤ .49 lb/d	all year
2,4-Dichlorophenol	30-day average	≤ .04 mg/L	all year
2,4-Dichlorophenol	30-day average	≤ .04 mg/L	all year
2,4-Dichlorophenol	daily maximum	≤ .11 mg/L	all year
2,4-Dichlorophenol	daily maximum	≤ .11 mg/L	all year
2,4-Dichlorophenol	30-day average	≤ .28 lb/d	all year
2,4-Dichlorophenol	30-day average	≤ .28 lb/d	all year
2,4-Dichlorophenol	daily maximum	≤ .79 lb/d	all year
2,4-Dichlorophenol	daily maximum	≤ .79 lb/d	all year
2,4-Dimethylphenol	30-day average	≤ .02 mg/L	all year
2,4-Dimethylphenol	30-day average	≤ .02 mg/L	all year
2,4-Dimethylphenol	daily maximum	≤ .04 mg/L	all year
2,4-Dimethylphenol	daily maximum	≤ .04 mg/L	all year
2,4-Dimethylphenol	30-day average	≤ .13 lb/d	all year
2,4-Dimethylphenol	30-day average	≤ .13 lb/d	all year
2,4-Dimethylphenol	daily maximum	≤ .25 lb/d	all year
2,4-Dimethylphenol	daily maximum	≤ .25 lb/d	all year
2,4-Dinitrotoluene	30-day average	≤ .11 mg/L	all year
2,4-Dinitrotoluene	30-day average	≤ .11 mg/L	all year
2,4-Dinitrotoluene	daily maximum	≤ .29 mg/L	all year
2,4-Dinitrotoluene	daily maximum	≤ .29 mg/L	all year
2,4-Dinitrotoluene	30-day average	≤ .8 lb/d	all year
2,4-Dinitrotoluene	30-day average	≤ .8 lb/d	all year
2,4-Dinitrotoluene	daily maximum	≤ 2.01 lb/d	all year
2,4-Dinitrotoluene	daily maximum	≤ 2.01 lb/d	all year
2,4-Dinitrophenol	30-day average	≤ .07 mg/L	all year
2,4-Dinitrophenol	30-day average	≤ .07 mg/L	all year
2,4-Dinitrophenol	daily maximum	≤ .12 mg/L	all year
2,4-Dinitrophenol	daily maximum	≤ .12 mg/L	all year
2,4-Dinitrophenol	30-day average	≤ .5 lb/d	all year
2,4-Dinitrophenol	30-day average	≤ .5 lb/d	all year
2,4-Dinitrophenol	daily maximum	≤ .87 lb/d	all year
2,4-Dinitrophenol	daily maximum	≤ .87 lb/d	all year
2,6-Dinitrotoluene	30-day average	≤ .26 mg/L	all year
2,6-Dinitrotoluene	30-day average	≤ .26 mg/L	all year
2,6-Dinitrotoluene	daily maximum	≤ .64 mg/L	all year
2,6-Dinitrotoluene	daily maximum	≤ .64 mg/L	all year
2,6-Dinitrotoluene	30-day average	≤ 1.8 lb/d	all year
2,6-Dinitrotoluene	30-day average	≤ 1.8 lb/d	all year
2,6-Dinitrotoluene	daily maximum	≤ 4.52 lb/d	all year
2,6-Dinitrotoluene	daily maximum	≤ 4.52 lb/d	all year
4-Nitrophenol	30-day average	≤ .07 mg/L	all year
4-Nitrophenol	30-day average	≤ .07 mg/L	all year
4-Nitrophenol	daily maximum	≤ .12 mg/L	all year
4-Nitrophenol	daily maximum	≤ .12 mg/L	all year
4-Nitrophenol	30-day average	≤ .51 lb/d	all year
4-Nitrophenol	30-day average	≤ .51 lb/d	all year
4-Nitrophenol	daily maximum	≤ .87 lb/d	all year
4-Nitrophenol	daily maximum	≤ .87 lb/d	all year
4,6-Dinitro-o-cresol	30-day average	≤ .08 mg/L	all year
4,6-Dinitro-o-cresol	30-day average	≤ .08 mg/L	all year
4,6-Dinitro-o-cresol	daily maximum	≤ .28 mg/L	all year
4,6-Dinitro-o-cresol	daily maximum	≤ .28 mg/L	all year
4,6-Dinitro-o-cresol	30-day average	≤ .55 lb/d	all year
4,6-Dinitro-o-cresol	30-day average	≤ .55 lb/d	all year
4,6-Dinitro-o-cresol	daily maximum	≤ 1.95 lb/d	all year
4,6-Dinitro-o-cresol	daily maximum	≤ 1.95 lb/d	all year
Phenol	30-day average	≤ .02 mg/L	all year
Phenol	30-day average	≤ .02 mg/L	all year
Phenol	daily maximum	≤ .03 mg/L	all year
Phenol	daily maximum	≤ .03 mg/L	all year
Phenol	30-day average	≤ .11 lb/d	all year
Phenol	30-day average	≤ .11 lb/d	all year
Phenol	daily maximum	≤ .18 lb/d	all year
Phenol	daily maximum	≤ .18 lb/d	all year
Naphthalene	30-day average	≤ .02 mg/L	all year
Naphthalene	30-day average	≤ .02 mg/L	all year
Naphthalene	daily maximum	≤ .06 mg/L	all year
Naphthalene	daily maximum	≤ .06 mg/L	all year
Naphthalene	30-day average	≤ .16 lb/d	all year
Naphthalene	30-day average	≤ .16 lb/d	all year
Naphthalene	daily maximum	≤ .42 lb/d	all year
Naphthalene	daily maximum	≤ .42 lb/d	all year
Surfactants [MBAS]	30-day average	≤ 252 lb/d	all year
Surfactants [MBAS]	daily maximum	≤ 510 lb/d	all year
Di[2-ethylhexyl] phthalate [DEHP]	30-day average	≤ .1 mg/L	all year
Di[2-ethylhexyl] phthalate [DEHP]	30-day average	≤ .1 mg/L	all year
Di[2-ethylhexyl] phthalate [DEHP]	daily maximum	≤ .28 mg/L	all year
Di[2-ethylhexyl] phthalate [DEHP]	daily maximum	≤ .28 mg/L	all year
Di[2-ethylhexyl] phthalate [DEHP]	30-day average	≤ .73 lb/d	all year
Di[2-ethylhexyl] phthalate [DEHP]	30-day average	≤ .73 lb/d	all year
Di[2-ethylhexyl] phthalate [DEHP]	daily maximum	≤ 1.97 lb/d	all year
Di[2-ethylhexyl] phthalate [DEHP]	daily maximum	≤ 1.97 lb/d	all year
Di-n-butyl phthalate	30-day average	≤ .03 mg/L	all year
Di-n-butyl phthalate	30-day average	≤ .03 mg/L	all year
Di-n-butyl phthalate	daily maximum	≤ .06 mg/L	all year
Di-n-butyl phthalate	daily maximum	≤ .06 mg/L	all year
Di-n-butyl phthalate	30-day average	≤ .19 lb/d	all year
Di-n-butyl phthalate	30-day average	≤ .19 lb/d	all year
Di-n-butyl phthalate	daily maximum	≤ .4 lb/d	all year
Di-n-butyl phthalate	daily maximum	≤ .4 lb/d	all year
Vinyl chloride	30-day average	≤ .1 mg/L	all year
Vinyl chloride	30-day average	≤ .1 mg/L	all year
Vinyl chloride	daily maximum	≤ .27 mg/L	all year
Vinyl chloride	daily maximum	≤ .27 mg/L	all year
Vinyl chloride	30-day average	≤ .73 lb/d	all year
Vinyl chloride	30-day average	≤ .73 lb/d	all year
Vinyl chloride	daily maximum	≤ 1.89 lb/d	all year
Vinyl chloride	daily maximum	≤ 1.89 lb/d	all year
Trichloroethylene	30-day average	≤ .02 mg/L	all year
Trichloroethylene	30-day average	≤ .02 mg/L	all year
Trichloroethylene	daily maximum	≤ .05 mg/L	all year
Trichloroethylene	daily maximum	≤ .05 mg/L	all year
Trichloroethylene	30-day average	≤ .15 lb/d	all year
Trichloroethylene	30-day average	≤ .15 lb/d	all year
Trichloroethylene	daily maximum	≤ .38 lb/d	all year
Trichloroethylene	daily maximum	≤ .38 lb/d	all year
Hexachlorobenzene	30-day average	≤ .02 mg/L	all year
Hexachlorobenzene	30-day average	≤ .02 mg/L	all year
Hexachlorobenzene	daily maximum	≤ .03 mg/L	all year
Hexachlorobenzene	daily maximum	≤ .03 mg/L	all year
Hexachlorobenzene	30-day average	≤ .11 lb/d	all year
Hexachlorobenzene	30-day average	≤ .11 lb/d	all year
Hexachlorobenzene	daily maximum	≤ .2 lb/d	all year
Hexachlorobenzene	daily maximum	≤ .2 lb/d	all year
Hexachlorobutadiene	30-day average	≤ .02 mg/L	all year
Hexachlorobutadiene	30-day average	≤ .02 mg/L	all year
Hexachlorobutadiene	daily maximum	≤ .05 mg/L	all year
Hexachlorobutadiene	daily maximum	≤ .05 mg/L	all year
Hexachlorobutadiene	30-day average	≤ .14 lb/d	all year
Hexachlorobutadiene	30-day average	≤ .14 lb/d	all year
Hexachlorobutadiene	daily maximum	≤ .35 lb/d	all year
Hexachlorobutadiene	daily maximum	≤ .35 lb/d	all year
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year
Chlorine, total residual	daily maximum	≤ .05 mg/L	all year
3,4-Benzofluoranthene	30-day average	≤ .02 mg/L	all year
3,4-Benzofluoranthene	30-day average	≤ .02 mg/L	all year
3,4-Benzofluoranthene	daily maximum	≤ .06 mg/L	all year
3,4-Benzofluoranthene	daily maximum	≤ .06 mg/L	all year
3,4-Benzofluoranthene	30-day average	≤ .16 lb/d	all year
3,4-Benzofluoranthene	30-day average	≤ .16 lb/d	all year
3,4-Benzofluoranthene	daily maximum	≤ .43 lb/d	all year
3,4-Benzofluoranthene	daily maximum	≤ .43 lb/d	all year
Chloroethane	30-day average	≤ .1 mg/L	all year
Chloroethane	30-day average	≤ .1 mg/L	all year
Chloroethane	daily maximum	≤ .27 mg/L	all year
Chloroethane	daily maximum	≤ .27 mg/L	all year
Chloroethane	30-day average	≤ .73 lb/d	all year
Chloroethane	30-day average	≤ .73 lb/d	all year
Chloroethane	daily maximum	≤ 1.89 lb/d	all year
Chloroethane	daily maximum	≤ 1.89 lb/d	all year
Tetrachloroethylene	30-day average	≤ .02 mg/L	all year
Tetrachloroethylene	30-day average	≤ .02 mg/L	all year
Tetrachloroethylene	daily maximum	≤ .06 mg/L	all year
Tetrachloroethylene	daily maximum	≤ .06 mg/L	all year
Tetrachloroethylene	30-day average	≤ .16 lb/d	all year
Tetrachloroethylene	30-day average	≤ .16 lb/d	all year
Tetrachloroethylene	daily maximum	≤ .4 lb/d	all year
Tetrachloroethylene	daily maximum	≤ .4 lb/d	all year

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/IL0002453 · MCP: https://passage-data.com/mcp