The Tennessee Department Of Environment And Conservation Has Given Johnson City’s Water And Sewer Services A Sanitary Survey Score Of 98. The Inspection Covered System Management, Operator Compliance, And Water Treatment Over A Two-Year Period. City Officials Say The High Score Reflects Decades Of Investment In Water Infrastructure And The Dedication Of Staff. Johnson City Water Services Treats Over Five Point Six Billion Gallons Of Water For More Than Forty-Eight Thousand Accounts Each Year.