To ask the Secretary of State for the Environment if he will list the results of all microbiological testing undertaken in the Palace of Westminster for t he presence of legionella bacteria in air conditioning and all other water facilities.

[holding answer 9 June 1988]: No regular testing is undertaken specifically for legionella bacteria. Details of the microbiological testing carried out in the last 12 months were given in response to the hon. Member's question of 7 June at column 740.