The San Fernando Water District in the Philippines supplies clean and safe water after it adopted Israeli ultraviolet water technology worth $4 million. The UV systems from Israel’s Atlantium (see here) purify water far better than chlorine at lower cost with no chemical residue.
http://www.thestandard.com.ph/news/-provinces/215419/ultraviolet-lamps-purify-sf-water.html
http://www.texin.com.ph/?page_id=119