The Welsh National Water Development Authority (WNWDA) (Awdurdod Cenedlaethol Datblygu Dwr Cymru in Welsh) and later the Welsh Water Authority was one of ten regional water authorities set up in the UK and came into existence on 6 August 1973 [1] with its headquarters in Brecon.[2] by virtue of the Water Act 1973[3] It took over the sewerage and sewage disposal responsibilities of the local authorities within its area, the roles and responsibilities of the six existing River Authorities in Wales and most of the water supply undertakings.[4] The authority was dissolved in 1989 as part of the privatisation of the water industry.