HC Deb 17 January 1990 vol 165 cc246-7W
Mr. Gareth Wardell

To ask the Secretary of State for the Environment what information he has on the use of ozone as a purifier of drinking water within the EEC.

Mr. Heathcoat-Amory

I understand that ozone is used to some extent in most member states while it is used extensively in France.

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