Revision of Drinking Water Quality Standards in Japan
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The Japanese Ministry of Health, Labor and Welfare revised the Drinking Water Quality Standards in 2003. Key changes included expanding the number of regulated items from 46 to 50, adding items like E. coli and aluminum, and introducing a rolling revision system to continuously improve standards. A new framework was established with Drinking Water Quality Standards, Complementary items including 101 pesticides, and Items for Further Study. Water suppliers must now prepare Water Quality Analysis Plans outlining their testing procedures.
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Revision of Drinking Water Quality Standards in Japan
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