Town Hall Address 52 Lyme Street Old Lyme, CT 06371 United States- New London County Website http://www.oldlyme-ct.gov Town Clerk 860-434-1605 Ext. 221 https://connecticut-townclerks-records.com/User/Login.aspx?ReturnURL=/index.aspx United States Assessor Ext. 219 http://gis.vgsi.com/oldlymect/ United States Water 800-428-3985 United States Sewer 800-428-3985 United States Probate Court Niantic Regional (PD-32) Tax Adjustment Uniform Fiscal Year - July, January Tax District Beach Tax Districts: Miami Beach , Old Colony Beach , Old Lyme Shores Beach , Point of Woods , Rogers Lake W Shore , White Sand Beach - Telephone numbers through Town Clerk Indices General Index > real property > town taxes > beach district taxes Town Hall Hours Monday to Friday – 9:00 to 12:00 and 1:00 to 4:00 Water Source Well and septic, Connecticut Water Co. Sewer Source Well and septic, Connecticut Water Co. County New London