Lesley Smith: Water NZ acting technical director on installing a parasite barrier for Queenstown water - Heather du Plessis-Allan Drive

Up to 23 cryptosporidium cases have been confirmed in Queenstown due to poor drinking water.

Water regulator Taumata Arowai has ordered the council to install a parasite barrier hoping to stop the problem.

Water New Zealand says about 20 percent of Kiwis drink water without this barrier.

Acting Technical Manager Lesley Smith joined Tim Dower.

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