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EPA/WATER RIN: 2040-AF10 Publication ID: 2012 
Title: Revisions to the Unregulated Contaminant Monitoring Regulation (UCMR 3) for Public Water Systems 
Abstract: The Safe Drinking Water Act (SDWA), as amended in 1996, requires the U.S. Environmental Protection Agency (EPA) to establish criteria for a program to monitor not more than 30 unregulated contaminants every five years. EPA published the first group of contaminants in the Unregulated Contaminant Monitoring Regulation (i.e., UCMR 1), which established a revised approach for UCMR implementation, in the Federal Register dated September 17, 1999 (64 FR 50556), and the second list of unregulated contaminants (UCMR 2) in the Federal Register dated January 4, 2007 (72 FR 367). The final regulation will meet the SDWA requirement for identifying new priority contaminants to be monitored during the third UCMR cycle (i.e., UCMR 3) of 2012-2015. 
Agency: Environmental Protection Agency(EPA)  Priority: Other Significant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Completed Actions 
Major: No  Unfunded Mandates: No 
CFR Citation: 40 CFR 141   
Legal Authority: 42 USC 300f et seq   
Legal Deadline:
Action Source Description Date
Final  Statutory  SDWA requires EPA to publish a UCMR every 5 years.  01/04/2012 
Timetable:
Action Date FR Cite
NPRM  03/03/2011  76 FR 11713   
Final Rule  05/02/2012  77 FR 26072   
Final Rule Effective  06/01/2012 
Additional Information: Docket #:EPA-HQ-OW-2009-0090
Regulatory Flexibility Analysis Required: No  Government Levels Affected: Local 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
RIN Data Printed in the FR: No 
Agency Contact:
Brenda Parris
Environmental Protection Agency
Water
USEPA,
Cincinnati, OH 45268
Phone:513 569-7961
Fax:513 569-7191
Email: parris.brenda@epamail.epa.gov