Waukesha, WI Tap Water Quality

Tap water quality in Waukesha, WI is a significant concern, currently receiving a below-average safety score of 41/100 across 4 ZIP codes. With 48 health-based violations recorded in the past 5 years, systems like Waukesha Water Utility have struggled to maintain compliance with EPA regulations enforced by Wisconsin Department of Natural Resources. Residents are strongly encouraged to utilize certified water filtration systems.

The accumulation of 48 health-based violations over the past 5 years highlights systemic challenges within Waukesha's water infrastructure. When violations occur, it means that drinking water tests revealed contaminant levels exceeding safe limits, triggering mandatory corrective actions by Wisconsin Department of Natural Resources. 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 3 out of 4 ZIP codes in Waukesha 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.