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  2. Drinking water quality in the United States - Wikipedia

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

    The rule mandates additional requirements for sampling tap water, corrosion control, public outreach and testing water in schools. The rule continues the requirement for replacement of lead service lines when the action level for lead is exceeded, but requires that a utility replace at least 3 percent of its lines annually, compared to 7 ...

  3. Water quality - Wikipedia

    en.wikipedia.org/wiki/Water_quality

    A rosette sampler is used for collecting water samples in deep water, such as the Great Lakes or oceans, for water quality testing.. Water quality refers to the chemical, physical, and biological characteristics of water based on the standards of its usage.

  4. Drinking water quality standards - Wikipedia

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

    Drinking water quality standards describes the quality parameters set for drinking water. Water may contain many harmful constituents, yet there are no universally recognized and accepted international standards for drinking water. Even where standards do exist, the permitted concentration of individual constituents may vary by as much as ten ...

  5. Water testing - Wikipedia

    en.wikipedia.org/wiki/Water_testing

    Water testing being conducted at a treatment facility in Broken Bow, Oklahoma. Water testing is a broad description for various procedures used to analyze water quality. Millions of water quality tests are carried out daily to fulfill regulatory requirements and to maintain safety. [1] Testing may be performed to evaluate:

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

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

    Share of the population without access to an improved water source, 2020. Global access to clean water is a significant global challenge that affects the health, well-being, and development of people worldwide. While progress has been made in recent years, millions of people still lack access to safe and clean drinking water sources.

  7. 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.

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