IMTT ILLINOIS - LEMONT FACILITY
NPDES ID: IL0005126
D — SNC: Discharge monitoring report not received
The facility didn't submit its required discharge monitoring report.
This quarter: 2 effluent violations.
Violations
May 31, 2026
Chlorine, total residual
300% over limit
Discharged 0.2 mg/L against a permitted limit of 0.05 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
24% over limit
Discharged 0.027 mg/L against a permitted limit of 0.0217 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Coliform, fecal general
413% over limit
Discharged 2050 MPN/100mL against a permitted limit of 400 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2026
pH
0% over limit
Discharged 9.46 SU against a permitted limit of 9 SU (MO MAX)
DMR, Limited - Numeric Violation
December 31, 2025
Acrolein
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Carbon tetrachloride
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
Dichlorobromomethane
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
Acrylonitrile
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
1,1-Dichloroethylene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
Ethylbenzene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
Bromoform
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
1,2-Dichloroethane, total weight
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
1,1-Dichloroethylene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Vinyl chloride
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
2-Chloroethyl vinyl ether, [mixed]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Acrolein
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
trans-1,2-Dichloroethylene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Acrolein
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
Chlorodibromomethane
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
1,1,1-Trichloroethane
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Tetrachloroethylene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Methylene chloride
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
1,1,2,2-Tetrachloroethane
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
Acrylonitrile
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
1,2-Dichloropropane
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
1,1,2,2-Tetrachloroethane
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
Carbon tetrachloride
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
2-Chloroethyl vinyl ether, [mixed]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
1,2-Dichloropropane
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Methyl chloride [Chloromethane]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
Trichloroethylene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
Ethylbenzene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
Benzene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
Chloroethane, total weight
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
trans-1,3-Dichloropropene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Chlorobenzene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Toluene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
1,1-Dichloroethylene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
Ethylbenzene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Toluene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
trans-1,2-Dichloroethylene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
1,1,2-Trichloroethane
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
Methylene chloride
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
1,1-Dichloroethane
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
2-Chloroethyl vinyl ether, [mixed]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
Acrylonitrile
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
47% over limit
Discharged 44 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Chlorobenzene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
1,2-Dichloropropane
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
1,2-Dichloropropane
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Benzene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
trans-1,2-Dichloroethylene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
1,1-Dichloroethylene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Chloroethane, total weight
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
Chloroethane, total weight
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Benzene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
Chlorodibromomethane
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
Trichloroethylene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
Toluene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
1,1,2,2-Tetrachloroethane
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Bromoform
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
trans-1,3-Dichloropropene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
Bromoform
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
Methyl chloride [Chloromethane]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
1,1,2-Trichloroethane
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Methyl bromide [Bromomethane]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
1,2-Dichloroethane, total weight
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
trans-1,2-Dichloroethylene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
Tetrachloroethylene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
Dichlorobromomethane
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
trans-1,3-Dichloropropene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
Chloroform
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Methyl bromide [Bromomethane]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Benzene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Carbon, tot organic [TOC]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Chlorodibromomethane
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Dichlorobromomethane
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
1,1,2-Trichloroethane
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
Chloroform
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
Bromoform
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Trichloroethylene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
1,2-Dichloroethane, total weight
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
Trichloroethylene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Chloroform
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
Methyl bromide [Bromomethane]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Chlorobenzene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
Acrylonitrile
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Tetrachloroethylene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
Chloroethane, total weight
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Carbon tetrachloride
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Methyl chloride [Chloromethane]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Vinyl chloride
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Vinyl chloride
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Methylene chloride
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
1,1-Dichloroethane
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
1,2-Dichloroethane, total weight
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
1,1-Dichloroethane
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Tetrachloroethylene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Methyl bromide [Bromomethane]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
trans-1,3-Dichloropropene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Carbon tetrachloride
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Acrolein
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
1,1,2-Trichloroethane
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Vinyl chloride
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
Methyl chloride [Chloromethane]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
1,1-Dichloroethane
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
Toluene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
Chloroform
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
1,1,1-Trichloroethane
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Chlorodibromomethane
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
1,1,2,2-Tetrachloroethane
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Ethylbenzene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Methylene chloride
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
Dichlorobromomethane
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
Carbon, tot organic [TOC]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Chlorobenzene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
1,1,1-Trichloroethane
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
2-Chloroethyl vinyl ether, [mixed]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
1,1,1-Trichloroethane
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (SEMI AVG)
DMR, Monitor Only - Overdue
October 31, 2025
Temperature, water deg. fahrenheit
0% over limit
Discharged 0 deg F against a permitted limit of 93 deg F (MO MAX)
DMR, Limited - Overdue
Solids, total suspended
77% over limit
Discharged 53 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Chlorine, total residual
20% over limit
Discharged 0.06 mg/L against a permitted limit of 0.05 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2025
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 60 mg/L (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 kg/d against a permitted limit of 3.40499997 kg/d (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 60 mg/L (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 kg/d against a permitted limit of 3.40499997 kg/d (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 kg/d against a permitted limit of 1.70249999 kg/d (30DA AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 kg/d against a permitted limit of 1.70249999 kg/d (30DA AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Overdue
July 31, 2025
Chlorine, total residual
20% over limit
Discharged 0.06 mg/L against a permitted limit of 0.05 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
May 31, 2025
Chlorine, total residual
20% over limit
Discharged 0.06 mg/L against a permitted limit of 0.05 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2025
Coliform, fecal general
75% over limit
Discharged 700 MPN/100mL against a permitted limit of 400 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
20% over limit
Discharged 0.06 mg/L against a permitted limit of 0.05 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2024
Coliform, fecal general
325% over limit
Discharged 1700 MPN/100mL against a permitted limit of 400 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)