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2. Culligan - Wikipedia

   en.wikipedia.org/wiki/Culligan

   Culligan was founded in 1936 by Emmett Culligan. With $50 and with additional financing by his brother Dr. John M. Culligan, and his sister, Anna V. Culligan, Emmett established the Culligan Zeolite Company with his brothers Drs. John and Leo Culligan as partners. They started the business in Jack McLaughlin's Blacksmith Shop at Northbrook ...

3. Water softening - Wikipedia

   en.wikipedia.org/wiki/Water_softening

   Water softening. Idealized image of water softening process involving replacement of calcium ions in water with sodium ions donated by a cation-exchange resin. Water softening is the removal of calcium, magnesium, and certain other metal cations in hard water. The resulting soft water requires less soap for the same cleaning effort, as soap is ...

4. Reverse osmosis - Wikipedia

   en.wikipedia.org/wiki/Reverse_osmosis

   Reverse osmosis (RO) is a water purification process that uses a semi-permeable membrane to separate water molecules from other substances. RO applies pressure to overcome osmotic pressure that favors even distributions. RO can remove dissolved or suspended chemical species as well as biological substances (principally bacteria), and is used in ...

5. Do You Really Need a Water Filter? - AOL

   www.aol.com/lifestyle/really-water-filter...

   They do not, however, filter out viruses and bacteria. Other filters need a plumber or a home handyperson to install. They sit either on the countertop or under the sink, at just a single faucet ...

6. Frying Pan Shoals Light - Wikipedia

   en.wikipedia.org/wiki/Frying_Pan_Shoals_Light

   The nearly 6000 square foot helipad captures rainwater into one of the remaining 14,500 gallon (55,000 liter) steel holding tanks attached under the belly where a ultraviolet (UV) and micro filtration system along with a commercial Culligan Water reverse osmosis system results in potable water suitable for cooking and general use.

7. Total dissolved solids - Wikipedia

   en.wikipedia.org/wiki/Total_dissolved_solids

   Hard water can cause scale buildup in pipes, valves, and filters, reducing performance and adding to system maintenance costs. These effects can be seen in aquariums, spas, swimming pools, and reverse osmosis water treatment systems. Typically, total dissolved solids are tested frequently in these applications, and filtration membranes are ...