Las Vegas, NV Tap Water Quality

Tap water in Las Vegas, NV ranks among the best in the state, maintaining a remarkable average water quality score of 91/100 across its 77 ZIP codes. Based on recent EPA Safe Drinking Water Act compliance records, water provided by Las Vegas Valley Water District and other municipal suppliers has consistently met or exceeded federal safety standards. This top-tier "A" grade reflects strong infrastructure, diligent monitoring by Nevada Division of Environmental Protection, and low contaminant levels.

The accumulation of 77 health-based violations over the past 5 years highlights systemic challenges within Las Vegas's water infrastructure. When violations occur, it means that drinking water tests revealed contaminant levels exceeding safe limits, triggering mandatory corrective actions by Nevada Division of Environmental Protection. The city relies on surface water, which may require significant treatment upgrades to address these recurring issues.

Additionally, lead exposure risk remains a critical issue for certain neighborhoods. EPA data indicates that 7 out of 77 ZIP codes in Las Vegas are rated as High or Very High risk for lead. This risk is often driven by aging homes with pre-1986 plumbing containing lead solder or service lines. Families in these areas should test their tap water and consider NSF/ANSI 53 certified filters.