New York’s “dangerously decrepit” Indian Point nuclear power plant will officially shut down by April 2021, according to an agreement reached this week between the state and Entergy utility company.

A source “with direct knowledge of the deal” told the New York Times that one reactor will “cease operations by April 2020, while the other must be closed by April 2021,” the paper reported on Friday. 

In recent years, radioactive tritium-contaminated water had been leaking from the aging Westchester County facility, which sits on the bank of the Hudson River, just 25 miles north of New York City, spurring calls for its closure from activists and concerned residents.

Recognizing New York Governor Andrew Cuomo’s history of supporting New York’s upstate nuclear facilities, including a $7.6 billion bailout this August for four other plants, anti-nuclear campaigners reacted to the news with caution.

“Does Indian Point #nuclear shutdown announcement in reality signal Entergy could sell the plant to Exelon? Shut down deal is a wait and see,” Beyond Nuclear wrote on Twitter, pointing to a possible deal between the state’s two utility giants. The group urged the state to “close it now” to avoid “four more years of meltdown risk.”