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Aggregation level
Data visualization
Percentage of service lines requiring replacement
Color boxes are sized proportionally to the number of community areas they contain, with finer detail offered for the top and bottom of the range.
Chicago: Does your water service line contain lead?
Enter your address to find out whether any part of your water service line needs replacing and how your neighborhood compares to others.
Important Information Data is current as of the city’s 2025 water service line inventory. The city’s data is incomplete and might contain inaccuracies and duplicates. Multiple addresses might be served by the same service line. Some addresses will appear as ranges. We encourage users to independently verify any information before acting on it.
Sources City of Chicago / Census Bureau
Analysis Peter Aldhous / Inside Climate News; Amy Qin / WBEZ
Development Clayton Aldern / Parker Ziegler / Grist. See our methods.
