Awdurdodau lleol yng nghyd-destun adran 47 yw prif gynghorau, cynghorau cymuned, awdurdodau tân ac achub, awdurdodau Parciau Cenedlaethol ac awdurdodau iechyd porthladdoedd (ar gyfer rhanbarth iechyd porthladd yng Nghymru a gyfansoddwyd o dan adran 2 o Ddeddf Iechyd y Cyhoedd (Rheoli Clefydau) 1984). Bydd angen i brif gyngor hefyd wneud trefniadau o ran presenoldeb mewn cyfarfodydd o’r weithrediaeth.
Local authorities in the context of section 47 are principal councils, community councils, fire and rescue authorities, National Park authorities and port health authorities (for a port health district in Wales constituted under section 2 of the Public Health (Control of Disease) Act 1984).  A principal council will also be required to make arrangements in respect of attendance at meetings of its executive.