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  • Title: A REVIEW OF NATURAL RADIONUCLIDES IN CANADIAN DRINKING WATER (1975-16).
    Author: Chen J, Cooke MW, Mercier JF.
    Journal: Radiat Prot Dosimetry; 2018 Apr 01; 179(1):26-36. PubMed ID: 29040789.
    Abstract:
    Historical results of natural radioactivity in drinking water were reviewed for a total of 21 communities across Canada from 1975 to 2016. Analyses for 226Ra, 210Pb and total uranium were carried out on monthly composite samples of drinking water from selected Canadian municipalities. Generally speaking, levels of 226Ra, 210Pb and total uranium were found to be low compared to national and international standards for drinking water quality. Because levels were low, federal monitoring programs were discontinued in most communities in 1986 except for Regina, Elliot Lake and Port Hope. The population-weighted average levels for these three communities, using data from the most recent 5 years, are <1 mBq/L for 226Ra, <5 mBq/L for 210Pb and <0.4 μg/L for total uranium. The average effective dose resulting from drinking water intake at these levels would be <4.3 μSv per year.
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