How the States Rank on the Environment Vermont, Maine, and Hawaii lead the way By Ashley Allen, Newser User Posted Dec 16, 2010 11:22 AM CST Promoted on Newser Dec 16, 2010 5:18 PM CST 7 comments Comments File photo of a wind farm. (AP) (User Submitted) – Which states are the most environmentally friendly? 24/7 WallSt analyzes pollution levels, energy use, and environmental policies to rank them from 1 to 50: Vermont: Among its many "green" attributes, Vermont has the smallest carbon footprint in the country. It also releases the fewest carcinogenic toxins. Maine: It does a stellar job when it comes to energy. Almost half of the electricity generated in the state comes from renewable resources. Hawaii: It produces the least amount of toxic waste in the country. It also has some of the cleanest air. New Hampshire and South Dakota round out the top 5. To see where they all rank, click here.