O.C.G.A. § 48-5-307

Whenever, pursuant to this part, any notice, subpoena, or writing is required to be given or served, the notice, subpoena, or writing may be served by any sheriff, deputy sheriff, or lawful constable. Each such officer shall be paid for his services the same fees as are paid officers for serving similar process in civil actions; and the fees shall be paid from the county treasury in the same manner as other payments by the county are made.