When the South West town of Busselton introduced a new, chemical-free method for purifying its water supply ten years ago, environmentalists and residents were thrilled.The process of using ultra violet rays to destroy all the nasties in the water replaced the need for harsh chemicals such as chlorine.
But now, the Busselton Water Board says the area's growing population is placing higher and higher demands on the system and the ultra violet purification process can't cope.
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