Clean Water Act discharge permit · NPDES ILL071366

LCDPW - MILL CREEK WRF, Old Mill Creek, IL: NPDES ILL071366 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
0Pollutants under a numeric limit
2Pollutants with an effluent exceedance

LCDPW - MILL CREEK WRF, held by LAKE COUNTY DPW-MILL CREEK WRF, holds NPDES permit ILL071366. EPA’s file records it issued January 1, 2021 and expiring December 31, 2025. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filed	LCDPW - MILL CREEK WRF
Permittee as filed	LAKE COUNTY DPW-MILL CREEK WRF
NPDES ID	ILL071366
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Associated permit record
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Program	Biosolids
Issued	January 1, 2021
Expiration date	December 31, 2025
Address	Old Mill Creek, IL 60083
Receiving water impaired	303(D) Listed
Subwatershed	Mill Creek (HUC 071200040202)

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

Effluent limits and exceedances

2Pollutants on file
0Under a numeric limit
2With a violation of any kind
2With 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
Copper, dry weight	0	5	5	March 31, 2012	33% over the limit
Arsenic, dry weight	0	1	1	December 31, 2011	41% over the limit

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 ILL071366.

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.

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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 ILL071366 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

This EPA public-records page covers Clean Water Act discharge permit ILL071366, held by LAKE COUNTY DPW-MILL CREEK WRF at Old Mill Creek, IL, which is administratively continued and past its December 31, 2025 expiration date. The page lists 2 pollutants with an effluent exceedance, 2 pollutants with a violation of any kind, and 0 pollutants under a numeric limit, within the Mill Creek subwatershed (HUC 071200040202).