Water Quality in Tucson, AZ

Detailed water quality data for Tucson, Arizona including contaminant levels, EPA comparisons, AquaScore™ grading, and treatment recommendations.

Water utility: Tucson Water.

Water source: Colorado River (CAP), local groundwater wells.

Key Contaminants Found

• Chromium (hexavalent)
• Arsenic
• Total trihalomethanes (TTHMs)
• Haloacetic acids (HAA5)
• 1,4-Dioxane

Tucson's groundwater has been impacted by decades of military and industrial activity, including the former Hughes Aircraft Company and Air Force bases. PFAS and 1,4-dioxane contamination is an emerging concern.

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