Janesville, WI Tap Water Quality

Tap water quality in Janesville, WI is a significant concern, currently receiving a below-average safety score of 50/100 across 4 ZIP codes. With 4 health-based violations recorded in the past 5 years, systems like Janesville 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.

Over the past 5 years, Janesville has recorded 4 health-based violations. While occasional violations can occur due to seasonal changes or temporary infrastructure issues, Janesville Water Utility is legally required to resolve these quickly and notify the public via their annual Consumer Confidence Report. The city's water supply, primarily drawn from ground water, is treated to address these specific contaminants.

Additionally, lead exposure risk remains a critical issue for certain neighborhoods. EPA data indicates that 3 out of 4 ZIP codes in Janesville 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.