Do you reckon you could tell the difference between a glass of tap water in Kaitaia and Balcutha?

What about exactly how good that water tastes?

That's the challenge for judges deciding New Zealand's Best Tasting Tap Water title.

In a week, the competition will be held in Dunedin, with Timaru the defending champs.

Max Towle spoke to Joshua McIndoe, chair of the Water Industry Operations Group