The organization also found that more than 20% of surveyed businesses were still providing plastic bags, despite the citywide ban.
Working with ABC News and nine ABC stations we assembled bundles of recyclable plastic bags, each containing a tracking device to see if those bags are being recycled at all.
Stores are allowed to give out recyclable paper bags for a 10-cent fee, but businesses that do not comply with the bag ban will face fines.
A plastic bag ban is now in effect in two Delaware County communities.
"We are saving so much on the grocery store side of it in terms of producing waste that this would be a quick and easy fix," said Senator Bob Smith.
Starting today, most grocery stores in the Garden State will not be allowed to give out single-use plastic or paper bags.