HC Deb 23 October 1985 vol 84 c174W
Mr. Canavan

asked the Secretary of State for Scotland whether he is satisfied that polychlorinated biphenyls, polybrominated biphenyls, dioxins or furans have not been inadvertently deposited into the public water supply of central Scotland, by aerial deposition, dumping or leaching from watercourses and groundwaters.

Mr. Ancram

It is the responsibility of the local water authority to ensure that water in its public supplies is wholesome. I understand that earlier this year Central Regional Council took special steps to satisfy itself that water supplies were not contaminated by individual PCBs or other unusual compounds.