This document contains presentations from an April 2017 public meeting and webinar on the fourth Unregulated Contaminant Monitoring Rule (UCMR 4).
You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.- Public Meeting and Webinar: UCMR 4 Meeting Presentations (PDF)(75 pp, 3 MB, April 2017, 815-A-17-001)