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Clean Water Act discharge permit · NPDES ILR10ZEFU

REGIONAL WATER SYSTEM IMPROVEMENTS - WATER TRANSMISSION MAIN BID PACKAGE 7A, Oak Forest, IL: NPDES ILR10ZEFU discharge permit, effluent exceedances, inspections, penalties

REGIONAL WATER SYSTEM IMPROVEMENTS - WATER TRANSMISSION MAIN BID PACKAGE 7A, held by Iowa, holds NPDES permit ILR10ZEFU. EPA’s file records it issued August 1, 2024 and expiring August 31, 2028. 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.

What the register holds for REGIONAL WATER SYSTEM IMPROVEMENTS - WATER TRANSMISSION MAIN BID PACKAGE 7A: its NPDES ID, its permit type and status, its dates, its address in Oak Forest, Illinois. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES ILR10ZEFU.

Identity

Facility as filedREGIONAL WATER SYSTEM IMPROVEMENTS - WATER TRANSMISSION MAIN BID PACKAGE 7A
Permittee as filedIowa
NPDES IDILR10ZEFU
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedAugust 1, 2024
Expiration dateAugust 31, 2028
Issuing agencyIEPA
AddressOak Forest, IL 60452
SubwatershedMidlothian Creek (HUC 071200030404)

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

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES ILR10ZEFU.

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

EPA’s single-event violation file, as loaded, holds no violation for NPDES ILR10ZEFU.

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, ILR10ZEFU.

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How often?
  • One permit holder — $99/month
  • One watershed — $2,990/year
  • One state — $4,990/year
  • The whole register — $18,000/year

How we handle your data → Privacy

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 ILR10ZEFU there.

Nearby on the register

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

What this page shows

In Oak Forest, 0.0% of the 6 storm water construction permits have a violation on file. REGIONAL WATER SYSTEM IMPROVEMENTS - WATER TRANSMISSION MAIN BID PACKAGE 7A sits in the Midlothian Creek subwatershed, which lists 32 NPDES permits, and 33.3% of the 6 Oak Forest storm water construction permits carry an earlier issue date than this permit.