People in Queenstown may have to keep boiling their water for months because of the current cryptosporidium infection.

The national water authority, Taumata Arowai, has served the council with a compliance notice because the Two Mile water treatment plant doesn't have a protozoa barrier which would keep parasites out of the supply.

Queenstown's mayor has warned it may take some time to get the right equipment to the town and install it at the plant.

Queenstown Primary School principal Fiona Cavanagh, spoke to Charlotte Cook about how they're coping.