Water quality · NV

Nevada Water Quality (2026)

Most population served by Colorado River water via Lake Mead. Arsenic and chromium-6 are recurring concerns in groundwater-served communities.

Our Nevada coverage focuses on the 1 metros below: Las Vegas. Each city page lists the utility's water source, hardness in grains per gallon, any contaminants flagged above EWG's stricter health guideline, and the whole-house system type that matches that specific profile, not a generic recommendation copied across the state.

If your Nevada city is not in the list yet, the nearest covered metro is usually a reasonable proxy: regional source water and treatment plants are typically shared across nearby municipalities. Private wells in Nevada are a different story and need a mail-in lab panel, the utility CCR will not apply.

Sources: EWG; USGS