Buchart has been active with several environmental, peace and social justice groups, and was an editor and writer for the local environmental quarterly "Links Magazine" from 1989 to 1998. In one 1995 article, he wrote that Manitoba civil servants had been instructed to write environmental laws and regulations so as to ensure that the government would not be held liable for lax enforcement. He has repeatedly called for Manitoba to improve its water safety legislation, noting that the provincial Environment Act exempts farmland from its provisions. Buchart criticized a water safety bill introduced by Steve Ashton in 2004, arguing that while it would provide for effective testing, it would not prevent waste-runoff from entering the water system in the first place. He has also argued that the province ignored its own laws by allowing the City of Winnipeg to spray malathion against mosquitoes.