Residents from Orewa to Pukekohe will gather at schools, beaches and parks this week to pick up rubbish.
More than 30 events have been organised around the Auckland region for Keep New Zealand Beautiful's annual Clean Up Week.
The charity drew attention to the alarming amount of rubbish in the city's waterways earlier this year.
Chief executive Heather Saunderson said among the six tonnes of litter the charity pulled from the water in a one-day clean up in May, were "supermarket trolleys, 300 car tyres, and the more unique, such as a statue of Buddha".
The Auckland Council's State of our Gulf 2014 report identified plastic as one of the most toxic and common pollutants in Auckland's waterways.