Clean Water Act discharge permit · NPDES IL0002631

HENNEPIN INDUSTRIAL DEVELOPMENT, Hennepin, IL: NPDES IL0002631 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
0Pollutants under a numeric limit
8Pollutants with an effluent exceedance

HENNEPIN INDUSTRIAL DEVELOPMENT holds NPDES permit IL0002631, which discharges to Illinois River. EPA’s file records it issued August 29, 2012 and expiring August 31, 2017. 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	HENNEPIN INDUSTRIAL DEVELOPMENT
Permittee as filed	HENNEPIN INDUSTRIAL DEVELOPMENT
NPDES ID	IL0002631
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	August 29, 2012
Expiration date	August 31, 2017
Address	Hennepin, IL 61327
Receiving water	ILLINOIS RIVER
Subwatershed	Depue Lake-Illinois River (HUC 071300010804)
Other EPA IDs (FRS)	RCRA handler ILD000781591

Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

10Pollutants on file
0Under a numeric limit
10With a violation of any kind
8With 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	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
Temperature, water deg. fahrenheit	22	18	October 31, 2010	45% over the limit
BOD, 5-day, 20 deg. C	14	14	August 31, 2006	63% over the limit
Oil and grease	4	4	January 31, 2003	85% over the limit
Lead, total [as Pb]	6	2	October 31, 2002	6,019% over the limit
Zinc, total [as Zn]	6	2	July 31, 2008	172% over the limit
Tetrachloroethylene	6	2	November 30, 2004	12,400% over the limit
pH	9	1	June 30, 2010
Iron, total [as Fe]	9	1	January 31, 2002	3% over the limit
Flow, in conduit or thru treatment plant	12	0
Naphthalene	6	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 IL0002631.

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, IL0002631.

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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 IL0002631 there.

Nearby on the register

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

This public-records page covers NPDES permit IL0002631 held by HENNEPIN INDUSTRIAL DEVELOPMENT in Hennepin, IL, which discharges to the ILLINOIS RIVER and sits in the Depue Lake-Illinois River watershed (HUC 071300010804). The permit is administratively continued, classed as a minor discharger, and lists 8 pollutants under a numeric limit and 8 pollutants with an effluent exceedance.