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2. Ultrapure water - Wikipedia

   en.wikipedia.org/wiki/Ultrapure_water

   Ultrapure water (UPW), high-purity water or highly purified water (HPW) is water that has been purified to uncommonly stringent specifications. Ultrapure water is a term commonly used in manufacturing to emphasize the fact that the water is treated to the highest levels of purity for all contaminant types, including: organic and inorganic compounds; dissolved and particulate matter; volatile ...

3. Purified water - Wikipedia

   en.wikipedia.org/wiki/Purified_water

   The conductivity of water is measured in Siemens per meter (S/m). Sea-water is typically 5 S/m, [5] drinking water is typically in the range of 5-50 mS/m, while highly purified water can be as low as 5.5 μS/m (0.055 μS/cm), a ratio of about 1,000,000:1,000:1. Purified water is used in the pharmaceutical industry.

4. 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 ...

5. California prepares to transform sewage into pure drinking ...

   www.aol.com/news/california-prepares-transform...

   The Metropolitan Water District plans to start direct potable reuse as part of its Pure Water Southern California project, building a $6-billion facility in Carson that is slated to become the ...

6. Desalination - Wikipedia

   en.wikipedia.org/wiki/Desalination

   Desalination is a process that removes mineral components from saline water. More generally, desalination is the removal of salts and minerals from a substance. [ 1] One example is soil desalination. This is important for agriculture. It is possible to desalinate saltwater, especially sea water, to produce water for human consumption or irrigation.

7. Multi-barrier approach - Wikipedia

   en.wikipedia.org/wiki/Multi-barrier_approach

   The Multi-barrier approach is a key paradigm for ensuring safe drinking water in jurisdictions such as Ontario, elsewhere in Canada, and New Zealand. It is defined as, [2] An integrated system of procedures, processes and tools that collectively prevent or reduce the contamination of drinking water from source to tap in order to reduce risks to ...