| 摘要 |
PROBLEM TO BE SOLVED: To purify water in a different way in accordance with purpose and use. SOLUTION: The raw water purified by a purification unit 1 is made to flow through a first water passage 3 to supply the raw water only purified directly to the water supply side. The raw water purified by the unit 1 is made to flow through a second water passage 4 to supply the electrolytic water mixed with a specified additive to the water supply side. Consequently, the water purified in a different way by switching the water passages 3 and 4 is appropriately used in accordance with the purpose and use.
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