A mountain of mostly recyclable rubbish collected from a short stretch of highway in the Bay of Islands has sparked renewed calls for a nationwide container deposit scheme.
Thirty volunteers spent just under two hours collecting litter from State Highway 11 between Paihia's Te Haumi Beach and Opua on Saturday.
They picked up 4 cubic metres of rubbish in just 5km, with organisers estimating that as much as 80 per cent of the waste could have been taken to a recycling station without charge. Recyclable materials included glass beer bottles, aluminium cans and plastic milk bottles.
Saturday's volunteers included Paihia's ''zero waste granny'' Jane Banfield, who said the amount of recyclable waste discarded along the region's roads was yet another argument for a return to bottle deposits.
If consumers had to pay a refundable 20 cent deposit on all bottles and cans, either they wouldn't throw them out the windows in the first first place or they would be picked up by fundraising groups which could make good money by cleaning up roadsides, Banfield said.