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  2. How to best filter your L.A. tap water based on your ZIP Code

    www.aol.com/news/best-filter-l-tap-water...

    The specific geographic location of a water source also determines what ends up in your tap water. A lake near a highly industrial area risks containing more pollutants than water coming from a ...

  3. Drinking water quality in the United States - Wikipedia

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

    The effectiveness of the program was questioned in 2008 by DC Water, the city's utility. [55] In 2016, more than 5,000 drinking water systems were found to be in violation of the lead and copper rule. [56] Congress passed the Reduction of Lead in Drinking Water Act in 2011.

  4. Ultrapure water - Wikipedia

    en.wikipedia.org/wiki/Ultrapure_water

    Ultrapure water (UPW), high-purity water or highly purified water (HPW) is water that has been purified to uncommonly stringent specifications. Ultrapure water is a term commonly used in manufacturing to emphasize the fact that the water is treated to the highest levels of purity for all contaminant types, including organic and inorganic compounds, dissolved and particulate matter, and ...

  5. Water testing - Wikipedia

    en.wikipedia.org/wiki/Water_testing

    The [[World Water Monitoring [36] Day|EarthEcho Water Challenge]] is an international education and outreach program that generates public awareness and involvement in safeguarding water resources globally by engaging citizens to conduct water testing of local water bodies. Participants learn how to conduct simple water quality tests, analyze ...

  6. Purified water - Wikipedia

    en.wikipedia.org/wiki/Purified_water

    Purified water is usually produced by the purification of drinking water or ground water.The impurities that may need to be removed are: inorganic ions (typically monitored as electrical conductivity or resistivity or specific tests)

  7. 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.

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