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EPA/WATER RIN: 2040-AE60 Publication ID: Fall 2008 
Title: Drinking Water: Regulatory Determinations Regarding Contaminants on the Second Drinking Water Contaminant Candidate List 
Abstract: The 1996 amendments to the Safe Drinking Water Act (SDWA) require EPA to publish a list of non-regulated contaminants every five years, which may warrant regulation due to their health effects and their potential for occurrence in public water systems (PWSs). The first Contaminant Candidate List (CCL), was published in the Federal Register on March 2, 1998 (63 FR 10247). The second CCL was published on February 22, 2005 (70 FR 9017). In addition to publishing the drinking water CCL, the SDWA also requires the Agency to select five or more contaminants from the second CCL and determine whether to regulate these contaminants with a National Primary Drinking Water Regulation (NPDWR). In order to make a determination of whether to develop an NPDWR for a contaminant, the SDWA requires three statutory tests be met: 1) the contaminant may have an adverse effect on the health of persons; 2) the contaminant is known to occur or there is a substantial likelihood that the contaminant will occur in public water systems with a frequency and at levels of public health concern; and 3) in the sole judgment of the Administrator, regulation of the contaminant presents a meaningful opportunity for health risk reduction for persons served by public water systems. Using these three statutory tests to make regulatory decisions, there are three possible outcomes: 1) regulate the contaminant with an NPDWR; 2) develop guidance (e.g., Health or Consumer Advisory); or 3) determine no action is necessary. 
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: None     (To search for a specific CFR, visit the Code of Federal Regulations.)
Legal Authority: 42 USC 300g-1(b)   
Legal Deadline:
Action Source Description Date
Final  Statutory  SDWA requires regulatory determinations every 5 years. Last round was made in July 2003.  07/18/2008 
Timetable:
Action Date FR Cite
Preliminary Notice  05/01/2007  72 FR 24016   
Final Notice  07/30/2008  73 FR 44251   
Additional Information: SAN No. 4821; EPA publication information: Preliminary Notice - http://www.epa.gov/fedrgstr/EPA-WATER/2007/May/Day-01/w7539.pdf; EPA Docket information: EPA-HQ-OW-2007-0068
Regulatory Flexibility Analysis Required: No  Government Levels Affected: None 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
RIN Information URL: www.epa.gov/safewater/ccl/index.html  
RIN Data Printed in the FR: No 
Agency Contact:
Yvette Selby-Mohamadu
Environmental Protection Agency
Water
4607M,
Washington, DC 20460
Phone:202 564-5245
Email: Selby-Mohamadu.Yvette@epamail.epa.gov

Wynne Miller
Environmental Protection Agency
Water
4607M, 4607M,
Washington, DC 20460
Phone:202 564-4887
Fax:202 564-3760
Email: miller.wynne@epamail.epa.gov