Water data & research
Water Around Research
Analyses of public water records, with data you can download and methods you can check. Each report explains its scope, dates and limitations. These reports do not rank overall water quality or safety.
Which U.S. water systems have testing records?
How many community water systems have PFAS tests, lead and copper results, and service-area maps?
Read the report 2025-08-26–2026-08-25Where severe drought grew or shrank most in one year
Which counties had the largest change in the area covered by severe drought or worse between August 2025 and August 2026?
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