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EPA/WATER RIN: 2040-AC98 Publication ID: Spring 2000 
Title: National Primary Drinking Water Regulations: Radium, Uranium, Alpha, Beta and Photon Emitters 
Abstract: Standards for radium, alpha, and beta and photon emitters were promulgated in 1976. They were included in the list of 83 contaminants for regulation (because they had MCLs but not MCLGs), along with uranium in the 1986 Safe Drinking Water Act (SDWA) Amendments. Regulations for uranium, radium 226, radium 228, and gross alpha and beta particles were proposed on July 18, 1991. The 1991 proposal was to raise the standard for radium 226/228 from combined level of 5 pCi/l to a separate standard of 20 pCi/l, and proposed uranium at 20 ug/l. Pursuant to court agreement, EPA will take final action on proposed uranium regulations by November, 2000, and final action on radium, alpha, beta, and photon emitters or state reasons for not taking final action by November, 2000. 
Agency: Environmental Protection Agency(EPA)  Priority: Economically Significant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Final Rule Stage 
Major: Yes  Unfunded Mandates: State, local, or tribal governments 
CFR Citation: 40 CFR 141    40 CFR 142   
Legal Authority: 42 USC 300(f) SDWA sec 1412   
Legal Deadline:
Action Source Description Date
Other  Judicial  See additional information.  11/18/2000 
Final  Judicial  for Uranium.  11/18/2000 
Timetable:
Action Date FR Cite
ANPRM  09/30/1986  51 FR 34836   
NPRM  07/18/1991  56 FR 33050   
NODA  04/00/2000    
Final Action  11/00/2000    
Additional Information: SAN No. 3992 Judicial Other Deadline Description: Final or rationale for not taking final action on Radium, Alpha, Beta and Photon emitters.
Regulatory Flexibility Analysis Required: Undetermined  Government Levels Affected: Federal, Local, State, Tribal 
Small Entities Affected: Businesses, Governmental Jurisdictions, Organizations  Federalism: Yes 
Included in the Regulatory Plan: No 
Sectors Affected: 22131 Water Supply and Irrigation Systems 
Agency Contact:
David Huber
Environmental Protection Agency
Water
4607,
Washington, DC 20460
Phone:202 260-9566
Fax:202 260-3762
Email: huber.david@epa.gov