The coastal town won the 2015 cleanest beaches awards and took the prize for environmental education.
�The most exceptional element of environmental education that occurs in Guilderton is embodied in the community�s ongoing efforts to preserve the environmental values of the beach and estuary system,� Australian Clean Beaches judge Averil Bones said.
Guilderton Community Association president Gillian Lamont, vice-president Linda Johnson and former president John Prince (92) travelled to Darwin for the August 14 announcement.
Ms Lamont said volunteers and organisations including the Moore River Catchment Council, Northern Agricultural Catchment Council and Shire of Gingin helped make Guilderton a contender.
Environment Minister Albert Jacob said the national title was well-deserved recognition for the town�s 150 residents.