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Clean Water Act discharge permit · NPDES ILL023329

ALGONQUIN STP, VILLAGE OF, Algonquin, IL: NPDES ILL023329 discharge permit, effluent exceedances, inspections, penalties

ALGONQUIN STP, VILLAGE OF, held by ALGONQUIN, VILLAGE OF, holds NPDES permit ILL023329. EPA’s file records it issued January 1, 2021 and expiring December 31, 2025. 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.

Identity

Facility as filedALGONQUIN STP, VILLAGE OF
Permittee as filedALGONQUIN, VILLAGE OF
NPDES IDILL023329
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeAssociated permit record
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramBiosolids
IssuedJanuary 1, 2021
Expiration dateDecember 31, 2025
AddressAlgonquin, IL 60102
Receiving water impaired303(D) Listed
SubwatershedJelkes Creek-Fox River (HUC 071200061206)

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

Effluent limits and exceedances

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 measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Copper, dry weight088December 31, 2012120% over the limit
Mercury, sludge, total, dry weight [as Hg]011March 31, 2011120% over the limit
Cadmium, dry weight080

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 ILL023329.

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.

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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 ILL023329 there.

Nearby on the register

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

What this page shows

This public-records page covers NPDES permit ILL023329 for the ALGONQUIN STP, VILLAGE OF in Algonquin, IL, held by ALGONQUIN, VILLAGE OF, with a status of administratively continued and a discharger class of Minor. The page lists 0 pollutants under a numeric limit and 2 pollutants with an effluent exceedance, with 3 pollutants on file and 3 with a violation of any kind.