Welsh Water Authority Dr. Roger Thomas asked the Secretary of State for Wales how many manual workers have been employed by the Welsh water authority on a yearly basis since 1974. Mr. Wyn Roberts The number employed by the Welsh water authority on 31 March in each year was : ----------- |1975|2901| ----------- |1976|2949| ----------- |1977|2973| ----------- |1978|2950| ----------- |1979|2971| ----------- |1980|2814| -----------