For New Plymouth District Council's Denise Rowland, no age is too young to become a Wai Warrior.
As the three waters education officer, Denise goes out to schools and community events to teach kids about how everyone can do their bit to cut down on how much water we use.
She brings along a working model where kids can get hands-on and pump water from a treatment plant to a home and then onto the sea.
"The kids absolutely love playing with the model. It's great to easily explain where our water comes from, how it gets to our houses and then what happens to it when it goes down the plughole," says Denise.
"We always need a new generation of Wai Warriors who understand why it's so important to cut down how much water we use. By going into schools, we're hopefully educating young people and inspiring them to be water wise."