Frank Eltman / AP

New York Governor Andrew Cuomo says he wants the U.S. Navy and Northrop Grumman to pay for the cost of treating polluted groundwater on Long Island.

A growing plume of contaminated water stretches southward from the company’s World War II-era manufacturing site in Bethpage.

The New York State Department of Environmental Conservation has proposed three options for treating the plume. The price-tag for these options ranges from 268 to more than 587-million dollars.

Frank Eltman / AP

The town of Hempstead on Long Island has filed a $50 million federal lawsuit against the U.S. Navy, Northrop Grumman and others over the cleanup of groundwater contaminated by the Bethpage plume.