Police said a urine test showed Watson’s blood alcohol level at the time was 0.07 percent, under Connecticut’s 0.08 legal limit for driving.
Watson, R-East Greenwich, lost his minority leader position less than two weeks after being charged with driving under the influence and possession of marijuana when he was stopped at an East Haven police DUI checkpoint on April 22.
Police said they are still awaiting tests that will determine whether there were traces of marijuana in Watson’s system.
Watson has said he uses marijuana to treat recurring pain from pancreatitis, and inflammation of the pancreas which put him in a coma at one point last fall. He insisted that he didn’t smoke any on the day of his arrest.