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Clean Water Act discharge permit · NPDES ILR10ZH4O

THE GARDNER SCHOOL ST. CHARLES, St. Charles, IL: NPDES ILR10ZH4O discharge permit, effluent exceedances, inspections, penalties

THE GARDNER SCHOOL ST. CHARLES, held by The Gardner School, holds NPDES permit ILR10ZH4O. EPA’s file records it issued June 28, 2026 and expiring August 31, 2028. 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.

What the register holds for THE GARDNER SCHOOL ST. CHARLES: its NPDES ID, its permit type and status, its dates, its address in St. Charles, Illinois. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES ILR10ZH4O.

Identity

Facility as filedTHE GARDNER SCHOOL ST. CHARLES
Permittee as filedThe Gardner School
NPDES IDILR10ZH4O
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedJune 28, 2026
Expiration dateAugust 31, 2028
Issuing agencyIEPA
AddressSt. Charles, IL 60174
Receiving water impaired303(D) Listed
SubwatershedTown of Geneva-Fox River (HUC 071200070106)

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 ILR10ZH4O.

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 ILR10ZH4O.

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, ILR10ZH4O.

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  • One permit holder — $99/month
  • One watershed — $2,990/year
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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 ILR10ZH4O there.

Nearby on the register

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

What this page shows

Of the 15 storm water construction permits in St. Charles, 0.0% have a violation on file, and THE GARDNER SCHOOL ST. CHARLES is among them. The Town of Geneva-Fox River subwatershed holds 63 NPDES permits, counting this site. By issue date, 93.3% of the St. Charles storm water construction permits carry an earlier issue date than this site.