Mark Ruffalo wants a revolution.

“Are we a country that is going to be responsive to people and make sure that our people remain healthy?” star of the upcoming film “Dark Waters,” asked a crowd gathered Tuesday on Capitol Hill. “Or are we going to be responsible only to the bottom line of corporations and their greed? Because right now the people are losing.”

In “Dark Waters,” in theaters now, the Academy Award-nominated actor plays real-life Cincinnati attorney Robert Bilott, who sued the DuPont chemical company for polluting a West Virginia community’s water supply. In 2017 DuPont agreed to pay more than $670 million to settle 3,550 damage claims related to the exposure.

The legal thriller, being described by some as “grim” and “urgent,” is generating Oscar buzz. Some Wall Street analysts even predict the film could become a major hit, to the point that it could scuttle a potential deal as DuPont looks to sell off some of its businesses.

Ruffalo, an outspoken liberal activist, made a point to “thank these native lands for having us here,” before addressing the crowd, something he says his “native brothers and sisters” taught him.

Then, striking a decidedly populist tone, the “Incredible Hulk” actor lit into “big corporations,” and a regulatory regime he believes favors businesses over communities. Washington should place “the people and our needs and our health before the health and the economic wealth of corporations,” he said.

Ruffalo, along with Reps. Dan Kildee, D-Mich., and Brian Fitzpatrick, R-Pa., called on the federal government to make several changes to the way it regulates PFAS (per- and polyfluoroalkyl substances), a class of chemicals that are raising serious pollution and health concerns as communities around the country discover their water is contaminated with them.

The threat posed by PFAS, which are so slow to degrade they’ve been nicknamed “forever chemicals,” and safety concerns about their replacements have become a new national environmental crisis.

The lawmakers, who lead the PFAS task force, are also pushing for legislation that would force the Environmental Protection Agency to include PFAS in its toxic release inventory and publish a national standard for the amount of PFAS contamination allowed in drinking water.

Ruffalo was first introduced to Kildee when the actor visited Flint, Mich., in the midst of its water contamination crisis. Ruffalo said he wants the movie to have an impact beyond water pollution awareness and also lead to a deeper understanding of the political process and how to change it.

“I hope this movie not only changes what happens with (chemicals), but changes our attitude about a system and changes our understanding of a system,” he said. “And I hope — I hope that this movie changes PFAS but also raises another question about the system that we’re living in, that’s betraying us every single day. And I hope that our representatives see that and become responsive to that.”

Did you know?

Mark Ruffalo is starring in the adaptation of Wally Lamb's novel "I Know This Much Is True." The six-episode series is expected to air on HBO in 2020.