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2. Pur (brand) - Wikipedia

   en.wikipedia.org/wiki/PUR_(brand)

   Pur's products include water filter faucet mounts, pitchers, side taps, dispensers, coolers, and filtration systems for Kenmore refrigerators of Sears Holdings Corporation. History [ edit ] The Pur brand was created and products invented by Minneapolis -Based Recovery Engineering, Inc., which was sold to Procter & Gamble in 1999 for ...

3. en.wikipedia.org

   en.wikipedia.org/wiki/Pur-water-filter-coupon-code

   en.wikipedia.org

4. Berkefeld filter - Wikipedia

   en.wikipedia.org/wiki/Berkefeld_filter

   Berkefeld filter. A Berkefeld filter [1] is a water filter made of diatomaceous earth ( Kieselguhr ). It was invented in Germany in 1891, and by 1922 was being marketed in the United Kingdom by the Berkefeld Filter Co. [2] Berkefeld was the name of the owner of the mine in Hanover, Germany, where the ceramic material was obtained.

5. Water purification - Wikipedia

   en.wikipedia.org/wiki/Water_purification

   Water purification is the process of removing undesirable chemicals, biological contaminants, suspended solids, and gases from water. The goal is to produce water that is fit for specific purposes. Most water is purified and disinfected for human consumption ( drinking water ), but water purification may also be carried out for a variety of ...

6. en.wikipedia.org

   en.wikipedia.org/wiki/Water-country-coupons

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7. Clean Water Rule - Wikipedia

   en.wikipedia.org/wiki/Clean_Water_Rule

   The Clean Water Rule is a 2015 regulation published by the U.S. Environmental Protection Agency (EPA) and the United States Army Corps of Engineers (USACE) to clarify water resource management in the United States under a provision of the Clean Water Act of 1972. [1] The regulation defined the scope of federal water protection in a more ...