A new study has found that only 20 percent of playgrounds in the lower North Island have drinking fountains. Researchers want minimum standards for water fountains in New Zealand, especially in light of the country’s recent heatwave. Tackling the playground in soaring temperatures can be thirsty work, but don’t rely on public drinking fountains to stay hydrated. “We tend to fill up drink bottles for the kids, because a lot of the playgrounds don’t have drinking fountains,” said Wellington mum Alice Chambers. According to a new study from the University of Otago in Wellington, she’s right….