A decommissioned water source on the Queens/Brooklyn border now has an extra layer of protection.

Earlier this month, The New York State Historic Review Board voted unanimously to add the Ridgewood Reservoir to the New York State Register of Historic Places.

NYC H2O, a nonprofit that teaches students about the City’s water system, advocated for the designation.

"And this will protect it for future generations to come to appreciate and to learn and to enjoy it's beauty, both it's ecological beauty and the engineering and functionality," said Matt Malina, Executive Director, NYC H20.

The application to list the site on the National Register has been submitted to the National Park Service.