City Water Quality

Chicago delivers excellent water quality from Lake Michigan with non-detectable PFAS levels, but the nation's largest lead service line inventory—over 400,000 pipes requiring replacement—creates serious risks for families, particularly in South and West Side communities where over 90% of service lines contain lead.

Seattle's tap water is among the safest in the nation with zero PFAS detections and pristine mountain sources—but only if it makes it through your pipes uncorrupted. While Seattle Public Utilities delivers exceptional water from protected Cascade watersheds requiring minimal treatment, chromium-6 concerns and pre-1986 building plumbing mean your specific tap water quality depends on factors beyond the municipal supply.

Washington DC experienced one of America's worst lead-in-water crises in 2001-2004, when faulty water treatment caused lead levels up to 20x the EPA limit and an estimated 2,000 fetal deaths. Twenty years later, DC Water has made significant progress—current lead levels are just 2 ppb, well below the 15 ppb action level. But with 34,400 lead service lines still remaining and a federal deadline looming, the path to a completely lead-free system presents substantial financial and logistical challenges.