§ Mrs. Joyce Butlerasked the Secretary of State for Social Services if, in the interest of public health, he is supplied with information about the raw material or manufacturing derivation of the hydrofluosilicic acid being supplied to Yorkshire Water Authority and to the North West Water Authority for fluoridation of the water supply; and if he will make a statement.
§ Mr. MoyleIn the interest of public health my concern is with the quality of the material used for fluoridation of water supplies and the method by which it is used to produce one part of fluoride per million parts of water. I am satisfied on both counts in respect of fluoridation schemes in the areas of the Yorkshire, North West and other water authorities.