Water Supply, standards

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"This manual provides basic information for water treatment operators about waterborne viral, bacterial, and parasitic pathogens. The topics covered include assessing current levels of contaminants in source waters, containing these contaminants, optimizing treatment plant perfo…

"This fourth edition of the World Health Organization's Guidelines for Drinking-water Quality builds on over 50 years of guidance by WHO on drinking-water quality which has formed an authoritative basis for the setting of national regulations and standards for water safety in su…