Almost half of Welsh councils don't teach swimming in the Welsh language, even in places where large numbers of children receive Welsh-medium education, according to figures released by Welsh language campaigners today (Thursday 29th April).In Carmarthenshire, the local authority admitted that less than one per cent of its swimming lessons - 10 out of 6,200 - were taught in Welsh in Rhydaman swimming pool last year, although 62% of the town's population and 50% of the county speak the language. In Powys, less than two per cent of lessons were in Welsh, in a county where over 20% speak it.