According to the WHO, tap water is safe for consumption for 100% of the country.
Tap water throughout New Zealand is generally safe to drink, and public taps with nondrinkable water tend to be labelled as such. However, water quality has faced pollution challenges in some places. Very occasionally, a warning may be issued that tap water must be boiled โ your accommodation should inform you if this happens.
According to the CDC tap water is generally safe for consumption.
According to the Numbeo water drinkability and accessibility index, tap water has a score of 84.13 / 100 (100 being best).
Numbeo considers this score to be "Very high"
1 adult could save about 803$ per year in New Zealand by drinking tap water instead of buying bottled water.
๐ณ Drinking tap water would also help with reducing your plastic footprint and improve environmental pollution.
Like in most countries, water quality and accessibility differs from location to location, therefore it's the best to check the information available on that place.