Clean Water Act discharge permit · NPDES IL0005126
IMTT ILLINOIS - LEMONT FACILITY, Lemont, IL: NPDES IL0005126 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 146Pollutants under a numeric limit
- 11Pollutants with an effluent exceedance
IMTT ILLINOIS - LEMONT FACILITY, held by IMTT ILLINOIS, holds NPDES permit IL0005126, which discharges to Illinois And Michigan Canal. EPA’s file records it issued December 13, 2019 and expiring December 31, 2024. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | IMTT ILLINOIS - LEMONT FACILITY |
|---|---|
| Permittee as filed | IMTT ILLINOIS |
| NPDES ID | IL0005126 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | December 13, 2019 |
| Expiration date | December 31, 2024 |
| Address | Lemont, IL 60439 |
| Receiving water | ILLINOIS AND MICHIGAN CANAL |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Saganashkee Slough-Calumet Sag Channel (HUC 071200040702) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 168Pollutants on file
- 146Under a numeric limit
- 167With a violation of any kind
- 11With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant; the 60 with the most exceedances of 168 are shown.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 20 | 113 | 84 | December 31, 2025 | 3,467% over the limit |
| Solids, total suspended | 20 | 84 | 77 | July 31, 2026 | 2,242% over the limit |
| Coliform, fecal general | 4 | 21 | 19 | July 31, 2026 | 3,400% over the limit |
| Chromium, hexavalent [as Cr] | 4 | 22 | 11 | September 30, 2000 | 355% over the limit |
| Nitrogen, ammonia total [as N] | 18 | 160 | 8 | May 31, 2001 | 72% over the limit |
| Oxygen, dissolved [DO] | 10 | 13 | 6 | April 30, 2017 | 99,999% over the limit |
| Chlorine, total residual | 2 | 9 | 6 | June 30, 2026 | 300% over the limit |
| Iron, total [as Fe] | 4 | 17 | 5 | March 31, 2019 | 355% over the limit |
| Oil and grease | 4 | 9 | 5 | July 31, 2000 | 149% over the limit |
| pH | 14 | 298 | 4 | January 31, 2026 | |
| Copper, total [as Cu] | 2 | 4 | 1 | May 31, 2026 | 24% over the limit |
| Flow, in conduit or thru treatment plant | 22 | 144 | 0 | ||
| Barium, total [as Ba] | 4 | 10 | 0 | ||
| Chromium, total [as Cr] | 2 | 10 | 0 | ||
| Vinyl chloride | 8 | 8 | 0 | ||
| Dichlorobromomethane | 6 | 8 | 0 | ||
| Carbon tetrachloride | 6 | 8 | 0 | ||
| Bromoform | 6 | 8 | 0 | ||
| Chloroform | 6 | 8 | 0 | ||
| Toluene | 6 | 8 | 0 | ||
| Benzene | 6 | 8 | 0 | ||
| Chlorobenzene | 6 | 8 | 0 | ||
| Chloroethane, total weight | 6 | 8 | 0 | ||
| Ethylbenzene | 6 | 8 | 0 | ||
| Methyl bromide [Bromomethane] | 6 | 8 | 0 | ||
| Methyl chloride [Chloromethane] | 6 | 8 | 0 | ||
| Methylene chloride | 6 | 8 | 0 | ||
| Tetrachloroethylene | 6 | 8 | 0 | ||
| 1,1-Dichloroethane | 6 | 8 | 0 | ||
| 1,1-Dichloroethylene | 6 | 8 | 0 | ||
| 1,1,1-Trichloroethane | 6 | 8 | 0 | ||
| 1,1,2-Trichloroethane | 6 | 8 | 0 | ||
| 1,1,2,2-Tetrachloroethane | 6 | 8 | 0 | ||
| 1,2-Dichloroethane, total weight | 6 | 8 | 0 | ||
| 1,2-Dichloropropane | 6 | 8 | 0 | ||
| trans-1,2-Dichloroethylene | 6 | 8 | 0 | ||
| 2-Chloroethyl vinyl ether, [mixed] | 6 | 8 | 0 | ||
| Trichloroethylene | 6 | 8 | 0 | ||
| Acrolein | 2 | 8 | 0 | ||
| Acrylonitrile | 2 | 8 | 0 | ||
| Chlorodibromomethane | 2 | 6 | 0 | ||
| Phenol | 2 | 6 | 0 | ||
| trans-1,3-Dichloropropene | 4 | 5 | 0 | ||
| Carbon, tot organic [TOC] | 2 | 5 | 0 | ||
| 1,2-Dichlorobenzene | 6 | 4 | 0 | ||
| 1,3-Dichlorobenzene | 6 | 4 | 0 | ||
| 1,4-Dichlorobenzene | 6 | 4 | 0 | ||
| Acenaphthylene | 2 | 4 | 0 | ||
| Acenaphthene | 2 | 4 | 0 | ||
| Anthracene | 2 | 4 | 0 | ||
| Benzo[b]fluoranthene | 2 | 4 | 0 | ||
| Benzo[a]pyrene | 2 | 4 | 0 | ||
| .delta.-Benzenehexachloride | 2 | 4 | 0 | ||
| Bis[2-chloroethyl] ether | 2 | 4 | 0 | ||
| Bis[2-chloroethoxy]methane | 2 | 4 | 0 | ||
| Bis[2-chloroisopropyl] ether | 2 | 4 | 0 | ||
| Butyl benzyl phthalate | 2 | 4 | 0 | ||
| Chrysene | 2 | 4 | 0 | ||
| Diethyl phthalate | 2 | 4 | 0 | ||
| Dimethyl phthalate | 2 | 4 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES IL0005126.
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
Watch this permit
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, IL0005126.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID IL0005126 there.
Nearby on the register
- Discharge permits in Lemont
- Every permit record in Lemont, A to Z
- Discharge permits in Illinois
- Every permit record in Illinois, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.