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  2. Drinking water quality in the United States - Wikipedia

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

    This USGS map shows the number of PFAS detected in tap water samples from select sites across the US. EPA began requiring public water systems to monitor for PFOA and perfluorooctanesulfonic acid (PFOS) in 2012, and published drinking water health advisories, which are non-regulatory technical documents, in 2016. [75]

  3. Drinking water quality standards - Wikipedia

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

    Drinking water standards include lists of parametric values, and also specify the sampling location, sampling methods, sampling frequency, analytical methods, and laboratory accreditation . In addition, a number of standards documents also require calculation to determine whether a level exceeds the standard, such as taking an average.

  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 quality - Wikipedia

    en.wikipedia.org/wiki/Water_quality

    The sampler must determine if a single time and location meets the needs of the investigation, or if the water use of interest can be satisfactorily assessed by averaged values of sampling over time and location, or if critical maxima and minima require individual measurements over a range of times, locations or events. The sample collection ...

  6. MapQuest - Wikipedia

    en.wikipedia.org/wiki/MapQuest

    MapQuest Find Me let users automatically find their location, access maps and directions and locate nearby points of interest, including airports, hotels, restaurants, banks and ATMs. Users also had the ability to set up alerts to be notified when network members arrive at or depart from a designated area.

  7. 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:

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