HC Deb 03 July 1981 vol 7 cc525-6W
Mr. Onslow

asked the Secretary of State for the Environment what conclusions he has so far been able to draw from his Department's monitoring of acid rain.

Mr. Giles Shaw

The main conclusion so far is that the annual average of acidity of rainfall at the three Government measuring stations is in the range pH 4.2 to 4.4. No clear trends are evident and the work is continuing.