§ Mr. Carol Johnsonasked the Secretary of State for the Environment (1) what was the arsenic content of samples of water taken from sources supplying the proposed Meldon Reservoir for the months preceding October, 1971, from the time when samples began to be examined;
(2) whether the level of arsenic detected in samples of water taken by the North Devon Water Board in October, 1971, can be connected with any specific cause or be associated with any exceptional conditions prevailing at the time;
(3) what is the lowest proportion of arsenic that can be detected or estimated in water by the analytical procedures used by the North Devon Water Board; which analytical technique is in fact being used; and what are its limits of experimental error.
§ Mr. Eldon GriffithsI will write to the hon. Member.