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2. Water softening - Wikipedia

   en.wikipedia.org/wiki/Water_softening

   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 not wasted bonding with calcium ions. Soft water also extends the lifetime of plumbing by reducing or eliminating scale build-up in pipes

3. Lime softening - Wikipedia

   en.wikipedia.org/wiki/Lime_softening

   Lime softening (also known as lime buttering, lime-soda treatment, or Clark's process) [1] is a type of water treatment used for water softening, which uses the addition of limewater (calcium hydroxide) to remove hardness (deposits of calcium and magnesium salts) by precipitation.

4. The 9 Best Sale Items at Costco Right Now - AOL

   www.aol.com/9-best-sale-items-costco-200246923.html

   $5.50 off each 24-pack of 16.9-ounce bottles. If you're tackling Dry January, San Pellegrino sparkling mineral water is a great way to mix things up.The 24-pack of 16.9-ounce bottles is $5.50 off ...

5. Jardine Water Purification Plant - Wikipedia

   en.wikipedia.org/wiki/Jardine_Water_Purification...

   Together the two plants supply water to about 3 million households in the city and 118 suburbs. [ 3 ] Filtration methods used by the Jardine Water Plant is extraction and adding chemical additives; with the use of sand and gravel to filter the water, while the chemical additives being fluoride to fight off tooth decay, phosphates to avoid ...

6. History of water filters - Wikipedia

   en.wikipedia.org/wiki/History_of_water_filters

   Water softeners, which use sodium ions to replace water-hardening minerals in water, were first introduced into the water treatment market in 1903. The theory of ion exchange involves replacing undesirable or potentially harmful ions with more desirable or harmless ones. This is implemented in domestic water treatment system as water softeners.

7. Asheville's North Fork Water Treatment Plant; What ... - AOL

   www.aol.com/news/ashevilles-north-fork-water...

   A concrete fusegate from North Fork Water Treatment Plant's auxiliary spillway, which tips and displaces to help increase reservoir storage during large flood events, can be seen washed out at the ...