Dark Waters is a film based on the true story of a corporate lawyer who ends up taking on DuPont Chemical. The origin of the screenplay originated from a Nathaniel Rich expose on attorney Rob Billott in The New York Times Magazine published in January of 2016 entitled, "The Lawyer Who Became DuPont's Worst Nightmare." The story detailed a crusading corporate attorney who went back to his hometown to take on the polluters who were destroying it. Actor and environmental activist Mark Ruffalo read the article and thought it would make for a compelling movie, optioning the rights and serving as a producer for the project.

Ruffalo gives a deliberately dry and restrained performance as Rob Bilott, an attorney working for a successful and conservative-minded Cincinnati-based firm of corporate lawyers. Every step of the way smacks of reluctance that holds him back, but a stronger conscience that drives him forward. His skills for protecting corporations are put to the test after a cattle farmer from his small home town in West Virginia approaches him, imploring him to look into why his livestock is diseased and their offspring born with severe congenital disabilities. He and his family might be getting cancer due to their exposure as well.

Anne Hathaway and Tim Robbins co-star. Todd Haynes directs.