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."
Water restrictions are usually brought in for the dryer summer months when people generally use more water for things like watering the garden, but the rivers which supply the water are at their lowest. Lake Mangamahoe, the District's main water storage, holds about 10 days' worth of water.
NPDC's Wai Warrior campaign has been running for three years and Denise says the District's water use is trending in the right direction, dropping from 309 litres per person per day in 2017/18 to 292 litres in 2018/19.
"We'd like to get that down to 275 litres, which is the national average, but even that is well above many other countries. I'm hopeful that the kids are getting the message and passing on to their mums, dads and guardians that we can all cut down on how much we are using."
Denise has so far taken her message to 12 schools and has reached more than 1000 people while at local events. A recent success was a collaboration with the Govett-Brewster Art Gallery called H20 art where kids played with the model and drew on toilet paper while sitting on a toilet seat.
"We know we've got a serious message but we try to make it fun so the kids learn how to be Wai Warriors," says Denise.
Water saving tips:
Turn off your tap while brushing your teeth.
Put the plug in your sink while washing vegetables.
Make sure the washing machine or dishwasher is full before using it.
■ If you're interested in Denise bringing the model to your school, email firstname.lastname@example.org or call 06 759 6060.