From the town website:

Following public health recommendations of the Centers for Disease Control and Prevention (CDC) and the Ledge Light Health Department (LLHD), masks will be required for all employees and visitors to Town facilities, regardless of their vaccination status, effective Monday, Aug. 23.  This step is being taken as a public health precaution as COVID-19 cases are rising in and around Lyme.  Town commissions and boards, as well as outside organizations, may continue to use Town facilities for meetings providing they follow the masking requirements.