"I have seen instances where some bigger retail chains double-bag groceries or begin using plastic bags before the customer has a chance to provide their own reusable bag." McDouall said.
"In order for our community to reduce its waste, the attitude of some retailers needs to change."
Last year Local Government New Zealand supported a levy on retailers who use plastic bags.
A similar levy introduced in the United Kingdom reduced single use plastic bag use by 85 per cent.
"Whanganui District Council supported this levy in principle but I believe we can do so much more locally to lead by example," McDouall said.
"I want to encourage smaller retailers to offer alternatives to single-use plastic bags, such as paper bags, supply reusable bags and encourage their customers to bring their own bag."
Retailers wanting to reduce their waste can talk to Whanganui District Council about this by contacting the council on 06 349 0001 or emailing wdc@whanganui.govt.nz