NewsNation has learned that the Environmental Protection Agency ordered Norfolk Southern to conduct more testing on creeks in East Palestine, Ohio, to determine the probable cause of a rainbow-colored sheen on the water. An EPA official suggested it could be due to contaminants in the sediment that were there before the train derailment, but resident Krissy Hylton isn't buying it. “We were never sick before,” she said. #EastPalestine #train #derailment Chris Cuomo hosts "CUOMO," a no-nonsense show featuring the day's most important news from all perspectives. "CUOMO" airs weeknights at 8 p.m. ET/ 7 p.m. CT on NewsNation. #CUOMO NewsNation is your source for fact-based, unbiased news for all America. More from NewsNation: newsnationnow.com Get our app: trib.al/TBXgYpp Find us on cable: trib.al/YDOpGyG How to watch on TV or streaming: trib.al/Vu0Ikij