"We've had to build another set of toilets, behind, to cope with usage.
"It attracts artists, they live throughout the blocks of land in the bush. It's absolutely made this town."
The Kawakawa Hundertwasser Park Trust president, Noma Shepherd, said: "The council are buying extra land [around the toilets] for all the buses to turn around.
"Tourist boats come into Paihia now, and you'll see four to five buses at the time pulling up [outside the toilets]."
The toilets are so popular, the Far North District Council funds three women, led by Susan Henare, to clean them - as often as every hour, on some days.
Appointed head custodian just three months ago, Mrs Henare has become a visionary, too.
"I'm passionate about Hundertwasser's vision of sustainability. It's not my dream job but I saw the opportunity of improving cleaning practices. Since September I've introduced recycling bins. It pains me to throw even a bottle in the rubbish.
"I'm trying to get the council to buy us eco-friendly products. I ordered us all-new uniforms and got us organic uniforms made of bamboo."
"When tourists see it for the first time, they're in awe. It makes me feel happy when I see someone walk in for the first time. A lot of them are so happy they leave a donation."
Hundertwasser's former personal assistant, Richard Smart, remains head of the Hundertwasser Foundation. Hundertwasser, who died months after the toilets' completion, was on site every day as the "cistern chapel" was built, he says.
"It was the biggest event Kawakawa has had in a long time. The toilets have pretty much revived the town."
Mr Smart remembers the excitement after the facility opened.
He has had concerns over the copyright status of the recently-approved Hundertwasser Park and visitor centre, although Mrs Shepherd said the park "will hopefully use Hundertwasser's ideas and philosophy" around recycling and ecology.
Mrs Shepherd said Kawakawa had "got over the embarrassment" of being New Zealand's Toilet Town.
"Now we're rather proud."
Things you didn't know about Kawakawa
• Icon: Hundertwasser toilets
• Population: 1,218
• Distance from Auckland: 211km
• Famous names: Former PM Mike Moore was raised there and it is also where John Key's sister, Susan, was born
• Cool feature: Tourist train named Gabriel travels down Kawakawa's main street several times a day
• Watch out for the: Annual flooding