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EPA/OW RIN: 2040-AF49 Publication ID: Fall 2016 
Title: Unregulated Contaminant Monitoring Rule (UCMR 4) for Public Water Systems 
Abstract:

The Safe Drinking Water Act (SDWA), as amended in 1996, requires that the EPA establish criteria for a program to monitor not more than 30 unregulated contaminants every five years.The 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 7, 2007 (72 FR 367), and the third (UCMR 3) on May 2, 2012 (77 FR 26072). 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 4 period of 2017-2021.

 
Agency: Environmental Protection Agency(EPA)  Priority: Substantive, Nonsignificant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Final Rule Stage 
Major: No  Unfunded Mandates: No 
EO 13771 Designation: uncollected 
CFR Citation: 40 CFR 141   
Legal Authority: 42 U.S.C. 300j-4   
Legal Deadline:
Action Source Description Date
Final  Statutory  Publication of UCMR 4 by early January 2017 supports the implementation needs within the 2017-2021 time frame (42 U.S.C.300j-4(a)(2))  12/31/2016 

Overall Description of Deadline: Statutory - May 2017

Timetable:
Action Date FR Cite
NPRM  12/11/2015  80 FR 76897   
NPRM Comment Period End  02/09/2016 
Final Rule  11/00/2016 
Regulatory Flexibility Analysis Required: No  Government Levels Affected: Federal, Local, State, Tribal 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
RIN Information URL: http://water.epa.gov/lawsregs/rulesregs/sdwa/ucmr/index.cfm  
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

Jillian Toothman
Environmental Protection Agency
Office of Water
USEPA, 26 West Martin Luther King Jr. Drive, Mail Code 140,
Cincinnati, OH 45268
Phone:513 569-7393
Email: toothman.jillian@epa.gov