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Clean Water Act discharge permit · NPDES ILR10ZDQ1

IDYLSIDE WATER MAIN IMPROVEMENTS, Joliet, IL: NPDES ILR10ZDQ1 discharge permit, effluent exceedances, inspections, penalties

IDYLSIDE WATER MAIN IMPROVEMENTS, held by Len Cox & Sons Excavating, holds NPDES permit ILR10ZDQ1. EPA’s file records it issued February 16, 2024 and expiring August 31, 2028.

IDYLSIDE WATER MAIN IMPROVEMENTS, Joliet, Illinois: Coverage under a general permit ILR10ZDQ1, held by Len Cox & Sons Excavating; Construction stormwater; Effective; issued February 16, 2024, term to August 31, 2028, by IEPA.

Illinois holds 5,215 Construction stormwater coverages of this permit type in EPA’s file; 1,164 were issued before ILR10ZDQ1. Len Cox & Sons Excavating holds 5 permits in Illinois.

Other permits held by Len Cox & Sons Excavating

Coverages issued nearest ILR10ZDQ1

IDYLSIDE WATER MAIN IMPROVEMENTS among its neighbors

EPA’s permit file holds 74 discharge permits in the Rock Run-Illinois and Michigan Canal subwatershed (HUC 071200040809), ILR10ZDQ1 among them.

Other permits in the Rock Run-Illinois and Michigan Canal subwatershed (HUC 071200040809)

What the register holds for IDYLSIDE WATER MAIN IMPROVEMENTS: its NPDES ID, its permit type and status, its dates, its address in Joliet, Illinois. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES ILR10ZDQ1.

Identity

Facility as filedIDYLSIDE WATER MAIN IMPROVEMENTS
Permittee as filedLen Cox & Sons Excavating
NPDES IDILR10ZDQ1
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedFebruary 16, 2024
Expiration dateAugust 31, 2028
Issuing agencyIEPA
AddressJoliet, IL 60436
SubwatershedRock Run-Illinois and Michigan Canal (HUC 071200040809)

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES ILR10ZDQ1.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES ILR10ZDQ1.

Inspections

EPA’s inspection file holds no inspection for NPDES ILR10ZDQ1.

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES ILR10ZDQ1.

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, ILR10ZDQ1.

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Nearby on the register

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

What this page shows

Of the 137 storm water construction permits in Joliet, 0.0% have a violation on record, and IDYLSIDE WATER MAIN IMPROVEMENTS is counted among them. The Rock Run-Illinois and Michigan Canal subwatershed lists 74 NPDES permits, and 19.7% of Joliet's storm water construction permits carry an earlier issue date than this coverage.