Joliet, IL Tap Water Quality

Tap water quality in Joliet, IL is a significant concern, currently receiving a below-average safety score of 49/100 across 6 ZIP codes. With 42 health-based violations recorded in the past 5 years, systems like Joliet have struggled to maintain compliance with EPA regulations enforced by Illinois Environmental Protection Agency. Residents are strongly encouraged to utilize certified water filtration systems.

The accumulation of 42 health-based violations over the past 5 years highlights systemic challenges within Joliet's water infrastructure. When violations occur, it means that drinking water tests revealed contaminant levels exceeding safe limits, triggering mandatory corrective actions by Illinois Environmental Protection Agency. The city relies on ground 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 4 out of 6 ZIP codes in Joliet 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.