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A number of homes in Waterbury's East End, photographed on July 23, 2025, are still supplied by lead service lines. Credit: Shahrzad Rasekh / CT Mirror

Editors note: This tool was produced in partnership with the Pulitzer Center.

Up to 8,000 lead service lines could still be supplying water to Connecticut residences and other properties.

This table shows addresses served by 60 of Connecticut’s public water systems. Together, they serve nearly 90% of Connecticut’s population that is connected to a public service line.

To look up your address, type it in the “Street Address” field, like the “park st” example. You can then filter by town or by what the water lines are made of.

If you can’t find your address, try different formats or abbreviations like “st” for street. GRR means “galvanized requiring replacement.”

If you don’t find your address, you may be in the 10% of the population served by a smaller water system or not served by a public water system at all.

If the database fails to display, try refreshing your page, turning off “incognito mode” or reducing browser protections.

The data was obtained by The Connecticut Mirror from the Connecticut Department of Public Health.

Renata is the data reporter for CT Mirror. She recently graduated from Columbia University with a master’s degree in data journalism. For her undergraduate studies, she graduated cum laude from Pennsylvania State University with dual bachelor’s degrees in international politics and broadcast journalism, and minors in global security and Middle East studies. Renata has a background in data analysis and programming, with proficiency in Python, QGIS, and HTML, among other tools. She previously interned at the Malala Fund and has reported stories from Scotland, Ireland, Northern Ireland, and Brazil. She speaks four languages and is currently learning a fifth.