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Clean Water Act discharge permit · NPDES AZMS80934

VENTANA MEDICAL SYSTEMS, Oro Valley, AZ: NPDES AZMS80934 discharge permit, effluent exceedances, inspections, penalties

VENTANA MEDICAL SYSTEMS, held by Ventana Medical Systems, Inc., holds NPDES permit AZMS80934. EPA’s file records it issued February 24, 2020 and expiring December 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.

What the register holds for VENTANA MEDICAL SYSTEMS: its NPDES ID, its permit type and status, its dates, its address in Oro Valley, Arizona. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES AZMS80934.

Identity

Facility as filedVENTANA MEDICAL SYSTEMS
Permittee as filedVentana Medical Systems, Inc.
NPDES IDAZMS80934
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedFebruary 24, 2020
Expiration dateDecember 30, 2024
AddressOro Valley, AZ 85755
SubwatershedLower Big Wash (HUC 150503010805)
Other EPA IDs (FRS)RCRA handler AZR000040980

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

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES AZMS80934.

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 AZMS80934.

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

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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 AZMS80934 there.

Nearby on the register

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

What this page shows

The Ventana Medical Systems, Inc. general permit coverage (NPDES ID AZMS80934) for the Oro Valley facility is one of 105 general permit coverages in Pima County, and 37.1% of those coverages carry an earlier issue date than this one. Among the 105 Pima County coverages, 0.0% have a violation on file, and this permit records no pollutants under a numeric limit and no effluent exceedances. The permit sits within the Lower Big Wash subwatershed, where 14 NPDES permits, this one included, are registered.