Based on blood alcohol content level, the state with the highest BAC is Iowa at .122%, followed by Arkansas at .113%, Alabama at .112%, Maine at .107% and Tennessee at .106%. The states with the lowest BAC are New Hampshire at .012%, Delaware at .026%, Utah at .031%, Arkansas at .037% and Wyoming at .051%. As for cities, Waltham, MA is tops with a BAC of .133%. Drink responsibly!