Identify the record
Include the utility name or PWSID and, when relevant, the contaminant or reporting period.
Data integrity & corrections
Help us keep the public record accurate.
Flag a numerical discrepancy, outdated sample date, source mismatch, or misattributed utility boundary. Useful reports point to the record that should be reviewed.
Scope of review
Corrections are evaluated against the cited source record. Submitting a report does not change a finding automatically; a reviewer checks it against the source before any page is updated.
Correction request
Tell us which record needs review.
Required fields help distinguish a data issue from a question about what a result means. Your report is stored securely for review and is not published.
A reviewable report
What makes a correction useful
Link the primary source
A state registry, Consumer Confidence Report, or laboratory record helps us verify the discrepancy.
Describe the mismatch
Tell us what PurityMap shows, what the source shows, and why the two appear to differ.
Not reporting a data discrepancy?
Use the contact page to find the right route for a utility claim, methodology question, or general inquiry.