Clean Water Act discharge permit · NPDES IL0039551

COMBINED SEWER OVERFLOW, Lemont, IL: NPDES IL0039551 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
1Pollutants under a numeric limit
0Pollutants with an effluent exceedance

COMBINED SEWER OVERFLOW, held by LEMONT, VILLAGE OF, holds NPDES permit IL0039551, which discharges to Il & Mich Canal Chicago Sanitary And Ship Canal. EPA’s file records it issued March 16, 2017 and expiring March 31, 2022. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filed	COMBINED SEWER OVERFLOW
Permittee as filed	LEMONT, VILLAGE OF
NPDES ID	IL0039551
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
Program	Combined sewer overflows
Issued	March 16, 2017
Expiration date	March 31, 2022
Address	Lemont, IL 60439
Receiving water	IL & MICH CANAL CHICAGO SANITARY AND SHIP CANAL
Receiving water impaired	303(D) Listed
Subwatershed	Maple Lake-Chicago Sanitary and Ship Canal (HUC 071200040705)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

2Pollutants on file
1Under a numeric limit
1With a violation of any kind
0With 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.

Pollutant or measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
Flow	0	88	0
Overflows	2	0	0

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES IL0039551.

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 IL0039551.

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

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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 IL0039551 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

This public-records page covers Clean Water Act NPDES permit IL0039551, a combined sewer overflow permit held by the Village of Lemont, with its status as EPA's permit file stood when the page was loaded on September 15, 2026. The permit, an administratively continued minor discharger permit issued March 16, 2017 and expiring March 31, 2022, lists 0 pollutants under a numeric limit and 0 pollutants with an effluent exceedance, within subwatershed HUC 071200040705.