It comes after the National Public Health Service confirmed a number of local illnesses caused by cryptosporidium.
There are currently 8 confirmed cases from neighbourhoods serviced by the local water supply.
ETHAN DE GROOT OUT
All Blacks prop Ethan de Groot will miss two matches at the Rugby World Cup after being hit with a three-week suspension for his dangerous tackle against Namibia.
De Groot was initially given a yellow card, which was then upgraded to red after connecting with the head of Namibian loose forward Adriaan Booysen.