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EPA/OW RIN: 2040-AF89 Publication ID: Fall 2018 
Title: ●Revisions to the Unregulated Contaminant Monitoring Rule (UCMR 5) for Public Water Systems 
Abstract:

The Safe Drinking Water Act (SDWA), as amended in 1996, requires that the U.S. Environmental Protection Agency (EPA) establish a program to monitor not more than 30 unregulated contaminants every five years. EPA published the first Unregulated Contaminant Monitoring Rule (UCMR 1) in the Federal Register on September 17, 1999 (64 FR 50556), the second (UCMR 2) on January 4, 2007 (72 FR 368), the third (UCMR 3) on May 2, 2012 (77 FR 26072), and the fourth (UCMR 4) on December 20, 2016 (81 FR 92666). This action meets the SDWA requirement by establishing the terms for the next cycle of monitoring and identifying the new unregulated contaminants to be monitored during the UCMR 5 period of 2022-2026.

 
Agency: Environmental Protection Agency(EPA)  Priority: Substantive, Nonsignificant 
RIN Status: First time published in the Unified Agenda Agenda Stage of Rulemaking: Long-Term Actions 
Major: No  Unfunded Mandates: No 
EO 13771 Designation: Regulatory 
CFR Citation: 40 CFR 141   
Legal Authority: 42 U.S.C. 300j-4   
Legal Deadline:  None
Timetable:
Action Date FR Cite
NPRM  06/00/2020 
Final Rule  12/00/2021 
Regulatory Flexibility Analysis Required: No  Government Levels Affected: Federal, Local, State, Tribal 
Small Entities Affected: No  Federalism: Undetermined 
Included in the Regulatory Plan: No 
RIN Data Printed in the FR: No 
Agency Contact:
Brenda Parris
Environmental Protection Agency
Office of Water
USEPA,
Cincinnati, OH 45268
Phone:513 569-7961
Fax:513 569-7191
Email: parris.brenda@epamail.epa.gov

Melissa Simic
Environmental Protection Agency
Office of Water
26 West Martin Luther King Drive,
Cincinnati, OH 45268
Phone:513 569-7864
Email: simic.melissa@epa.gov