413.Section 88B allows for a fluoridation proposal to be made by one or more local authorities in England. A fluoridation proposal is a proposal that the Secretary of State enters into arrangements with one or more water undertakers to increase the fluoride content of the water supplied by the undertaker or undertakers to a specific area. Subsection (4) allows for local authorities to propose fluoridation for their own area, or a larger area which includes some or all of their area.