In 2022-23 the number of accidental primary fires decreased by 1% whilst the number of accidental secondary fires increased by 16% (compared with 2021-22).
Yn 2020-21, gostyngodd nifer y prif danau damweiniol 9% tra bu cynnydd o 16% yn nifer y tanau eilaidd damweiniol (o’i gymharu â 2019-20).