Authorities in Ohio plan to test the water supply across a small village near a former weapons plant after a newspaper investigation published Friday found high levels of radioactivity in samples taken at a school, athletic field, library and other sites.

The Army Corps of Engineers has been removing tons of contaminated soil from the Cold War-era site since 2018 and has long maintained that residential areas were not affected by the work.

However, The Blade in Toledo said its tests showed radioactivity levels 10 times higher than normal in water from a drinking fountain at Eastwood Middle School, 45 times higher than normal at the Luckey Library and 1,731 times higher than normal at a water pump near athletic fields.

“We’ve got to get to the bottom of this,” said Lt. Col. Robert Burnham, commander of the U.S. Army Corps of Engineers’ Buffalo District, which oversees the cleanup.