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2. Portable water purification - Wikipedia

   en.wikipedia.org/wiki/Portable_water_purification

   Portable water purification devices are self-contained, easily transported units used to purify water from untreated sources (such as rivers, lakes, and wells) for drinking purposes. Their main function is to eliminate pathogens , and often also suspended solids and some unpalatable or toxic compounds .

3. Portable water tank - Wikipedia

   en.wikipedia.org/wiki/Portable_water_tank

   A portable water tank is a temporary collapsible tank designed for the reserve storage of water in firefighting, emergency relief, and military applications. These tanks can be either supported or unsupported. The supported tanks have a steel or aluminum frame and range in size from 600 to 5,000 US gallons (500 to 4,160 imp gal; 2,300 to 18,900 ...

4. Portable Aqua Unit for Lifesaving - Wikipedia

   en.wikipedia.org/wiki/Portable_Aqua_Unit_for...

   The Portable Aqua Unit for Lifesaving (short PAUL), also known as Water Backpack is a portable membrane water filter developed at the University of Kassel for humanitarian aid. It allows the decentralized supply of clean water in emergency and disaster situations.

5. 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

6. Softener - Wikipedia

   en.wikipedia.org/wiki/Softener

   Softener may refer to: Fabric softener , a conditioner that is typically applied to laundry during the rinse cycle in a washing machine. Stool softener , anionic surfactants that enable additional water and fats to be incorporated in the stool, making it easier for them to move through the gastrointestinal tract.

7. Water tank - Wikipedia

   en.wikipedia.org/wiki/Water_tank

   An elevated water tank, also known as a water tower, will create a pressure at the ground-level outlet of 1 kPa per 10.2 centimetres (4.0 in) or 1 psi per 2.31 feet (0.70 m) of elevation. Thus a tank elevated to 20 metres creates about 200 kPa and a tank elevated to 70 feet creates about 30 psi of discharge pressure, sufficient for most ...