Celebrities are getting in on the action, joining a campaign in New York against hydraulic fracturing.

Ethan Hawke, Mark Ruffalo, “Avatar’s” Zoe Saldana and Amy Ryan from "The Office" teamed up to raise awareness about the need to protect New York City’s water supply from contamination.

The spot features the celebrities enjoying New York’s famously clean drinking water, which they claim could be threatened by “fracking,” a controversial method of natural gas extraction in which chemicals are injected deep into the ground to get to natural gas supplies.

Currently, New York has a moratorium on most kinds of fracking while the practice is reviewed. In neighboring Pennsylvania, where the regulatory process has come under much criticism, fracking continues to take place. But as this map shows, water and geography — including the location of the Marcellus Shale formation, a huge underground natural gas reservoir — don’t pay attention to state boundaries. Perhaps it is this reality, and the reality that the New York moratorium could be lifted, that led these celebrities to join forces.

Take a look at the video below.

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