Subject to the provisions and limitations of existing laws and regulations, the Selectboard of the Town of Readsboro, or other appropriate legislative body, is empowered to establish charges for the said municipal services and methods of payment, and shall be further authorized and empowered to collect the same and enforce the payment thereof. All such costs required to support these special services shall be paid for by those receiving the services by a tax on their grand list to be assessed annually, or in such other manner as such Board shall determine. If by tax, such tax shall be paid and collected as other taxes, and shall be a lien on their grand list.