Behind New Zealand's clean, green image is a dirty truth Posted MonMonday 15 updated WedWednesday 17 A river in New Zealand's Southern Alps. ( Print text only Cancel New Zealand's waterways are some of the most degraded in the developed world. Will the Ardern government clean it up or will Māori take control? In New Zealand's Southern Alps, braided rivers radiate turquoise from the glacial flows coming off snow-capped mountains. Breathtaking vistas like these have provided the backdrop for Hollywood epics like Lord of the Rings and underpin one of the world's most recognised tourism campaigns, "100% Pure New Zealand". But behind New Zealand's clean and green image is a dirty truth — its freshwater rivers are among the most polluted in the developed world. Last year, a government report found nearly 60 per cent of the country's rivers carry pollution above acceptable levels, with 95 to 99 per cent of rivers in pastoral, urban and non-native forested areas contaminated.