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2. Drinking water quality in the United States - Wikipedia

   en.wikipedia.org/wiki/Drinking_water_quality_in...

   The Safe Drinking Water Act requires the US EPA to set standards for drinking water quality in public water systems (entities that provide water for human consumption to at least 25 people for at least 60 days a year). [3] Enforcement of the standards is mostly carried out by state health agencies. [4]

3. Drinking water quality legislation of the United States

   en.wikipedia.org/wiki/Drinking_water_quality...

   The Safe Drinking Water Act is the principal federal law governing public water systems. [1] These systems provide drinking water through pipes or other constructed conveyances to at least 15 service connections, or serve an average of at least 25 people for at least 60 days a year. As of 2017 there are over 151,000 public water systems. [2]

4. Plastic pipework - Wikipedia

   en.wikipedia.org/wiki/Plastic_pipework

   Beginning in the 1950s, uPVC pipes were used to replace corroded metal pipes and thus bring fresh drinking water to a growing rural and later urban population. uPVC pipes are certified safe for drinking water per NSF Standard 61 and used extensively for water distribution and transmission pipelines throughout North America and around the world ...

5. List of countries by access to clean water - Wikipedia

   en.wikipedia.org/wiki/List_of_countries_by...

   An improved water source, as defined by the World Health Organization (WHO), refers to a drinking water source that provides adequate and safe water for human consumption. Examples of improved water sources include piped water connections, protected wells, boreholes with hand pumps, packaged or delivered water and rainwater collection systems ...

6. Safe Drinking Water Act - Wikipedia

   en.wikipedia.org/wiki/Safe_Drinking_Water_Act

   The Safe Drinking Water Act (SDWA) is the primary federal law in the United States intended to ensure safe drinking water for the public. [3] Pursuant to the act, the Environmental Protection Agency (EPA) is required to set standards for drinking water quality and oversee all states, localities, and water suppliers that implement the standards.

7. Drinking water - Wikipedia

   en.wikipedia.org/wiki/Drinking_water

   The amount of drinking water required to maintain good health varies, and depends on physical activity level, age, health-related issues, and environmental conditions. [1] [2] For those who work in a hot climate, up to 16 litres (4.2 US gal) a day may be required. [1] About 1 to 2 billion people lack safe drinking water. [3]