Eilish, who is a long-standing climate campaigner, told Billboard magazine she felt compelled to tackle the problem.
"My parents have always kept me well informed and hyper aware that every choice we make and every action we take has an impact somewhere or on someone, good or bad, and that has always stuck with me," said the multiple Oscar and Grammy Award-winner.
Greg Cochrane, who hosts the music and sustainability podcast Sounds Like a Plan, called the star's announcement a "significant step".
Eilish's announcement comes after the star criticised artists who release multiple vinyl formats to boost album sales, calling the practise "really frustrating".
After the singer's mother, Maggie Baird, interrupted to point out that multiple vinyl sales "counts toward number one albums", Eilish responded: "I can't even express to you how wasteful it is."
Single LP colours will be made using BioVinyl - which replaces the petroleum used to manufacture Polyvinyl chloride with recycled used cooking oil.
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