Clean Water Act discharge permit · NPDES IL0025313

HENNEPIN PUBLIC WATER DISTRICT WWTP, Hennepin, IL: NPDES IL0025313 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
7Pollutants under a numeric limit
1Pollutants with an effluent exceedance

HENNEPIN PUBLIC WATER DISTRICT WWTP, held by HENNEPIN PUBLIC WATER DISTRICT, holds NPDES permit IL0025313, which discharges to Illinois River. EPA’s file records it issued May 15, 2019 and expiring April 30, 2024. 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 PUBLIC WATER DISTRICT WWTP
Permittee as filed	HENNEPIN PUBLIC WATER DISTRICT
NPDES ID	IL0025313
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Publicly owned treatment works
Program	Publicly owned treatment works
Issued	May 15, 2019
Expiration date	April 30, 2024
Address	Hennepin, IL 61327
Receiving water	ILLINOIS RIVER
Receiving water impaired	303(D) Listed
Subwatershed	Depue Lake-Illinois River (HUC 071300010804)
Other EPA IDs (FRS)	RCRA handler ILD060867983; ICIS-AIR source IL000155010AAA

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

Effluent limits and exceedances

7Pollutants on file
7Under a numeric limit
4With a violation of any kind
1With 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
Chlorine, total residual	2	2	1	May 31, 2003	33% over the limit
Solids, total suspended	5	4	0
BOD, carbonaceous [5 day, 20 C]	4	4	0
pH	2	2	0
Flow, in conduit or thru treatment plant	4	0	0
BOD, 5-day, 20 deg. C	1	0	0
Coliform, fecal general	1	0	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 IL0025313.

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, IL0025313.

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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 IL0025313 there.

Nearby on the register

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

This public-records page covers Clean Water Act discharge permit NPDES IL0025313 for the HENNEPIN PUBLIC WATER DISTRICT WWTP in Hennepin, IL, held by HENNEPIN PUBLIC WATER DISTRICT, with a permit status of Administratively continued and a Minor Discharger class. The page lists 7 pollutants under a numeric limit and 1 pollutant with an effluent exceedance, with the permit issued May 15, 2019 and expiring April 30, 2024.