Purification of water

Purification of water may refer to any of the following.

• Water purification, the large scale production of clean water for supply to consumer taps and industry.
• Distilled water, the use of distillation to remove contaminants from water
• Portable water purification, techniques for use in emergencies or away from conventional sources of clean water
• Water filter, devices used for small scale quality improvement, often in domestic situations
• Deionized water, industrial production of ultra pure water
• Reverse osmosis, a technique for producing potable water from highly contaminated sources.
• Sewage treatment, treatment of sewage to remove contaminants