LETTER: Treatment of Rarotonga’s water supply

"Ozone is far more powerful than chlorine and there is no residual foul taste, and while I am certain the authorities would have considered it, it would have been ruled out for no other reason that it would require the electrification of all ten intakes and the impact of that cost on what was already an embarrassment would have been untenable."

"Ozone is far more powerful than chlorine and there is no residual foul taste, and while I am certain the authorities would have considered it, it would have been ruled out for no other reason that it would require the electrification of all ten intakes and the impact of that cost on what was already an embarrassment would have been untenable."