The Tennessee Department Of Environment And Conservation Claims Jonesborough’S Water Is In Violation Of Federal Drinking Water Standards. According To A Letter Sent To Residents Last Month, Levels Of Tthm, A Byproduct From The Water Disinfection Process, Exceeded The Federal Maximum Levels Allowed. The Excess Amount, Which Was Founding Between July 1st To September 30th, Did Not Impact Safety. Steps Have Been Taken To Make Sure The Situation Does Not Occur In The Future.