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2. Solar water disinfection - Wikipedia

   en.wikipedia.org/wiki/Solar_water_disinfection

   Solar water disinfection, in short SODIS, is a type of portable water purification that uses solar energy to make biologically-contaminated (e.g. bacteria, viruses, protozoa and worms) water safe to drink. Water contaminated with non-biological agents such as toxic chemicals or heavy metals require additional steps to make the water safe to drink.

3. Tata Swach - Wikipedia

   en.wikipedia.org/wiki/Tata_Swach

   The Tata Swach is a water purifier developed by Tata Chemicals, a part of the Tata group in India. [1] Swach was designed as a low-cost purifier for Indian low-income groups, who lack access to safe drinking water. [2] [3] The product is sold in three variants as Tata Swach, Tata Swach Smart and Tata Swach Smart Magic. [4]

4. Point of use water filter - Wikipedia

   en.wikipedia.org/wiki/Point_of_use_water_filter

   Point of use water filters are used in individual houses or offices to provide filtration of potable water close to the point of consumption. [1] The related topic, point-of-use water treatment describes full-scale water treatment options and technologies designed to serve communities when municipal water treatment fails or is unavailable.

5. Portable water purification - Wikipedia

   en.wikipedia.org/wiki/Portable_water_purification

   Instead of using the static pressure of a water supply line to force the water through the filter, pressure is provided by a hand-operated pump. These devices can generate drinkable water from seawater. The Portable Aqua Unit for Lifesaving (short PAUL) is a portable ultrafiltration-based membrane water filter for humanitarian aid. It allows ...

6. Nanotechnology for water purification - Wikipedia

   en.wikipedia.org/wiki/Nanotechnology_for_water...

   In addition to this, ultrathin nanofilter coated with graphene is the most potent filter that could be commercialized for water purification. Graphene oxide membranes can be used in various forms such as free, surface modified, and graphene cast in membranes in the range of micro, nano, or ultrafilters.

7. Water purification - Wikipedia

   en.wikipedia.org/wiki/Water_purification

   Groundwater: The water emerging from some deep ground water may have fallen as rain many tens, hundreds, or thousands of years ago. Soil and rock layers naturally filter the ground water to a high degree of clarity and often, it does not require additional treatment besides adding chlorine or chloramines as secondary disinfectants.