Defining safe drinking water.
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D003257:Consumer Product Safety / Q000331:legislation & jurisprudence / Q000592:standards*; D004326:Drinking; D005767:Gastrointestinal Diseases / Q000453:epidemiology*; D006801:Humans; D009656:North America / Q000453:epidemiology; D012107:Research Design / Q000592:standards; D014871:Water Microbiology; D014876:Water Pollution / Q000009:adverse effects* / Q000331:legislation & jurisprudence; D014881:Water Supply / Q000331:legislation & jurisprudence / Q000592:standards*