§ Mr. Simon CoombsTo ask the Secretary of State for Health if he will make a statement on the response of the Swindon health authority to the possible threat to the public water supply in the Swindon area from the oganism cryptosporidia.
§ Mr. FreemanSwindon health authority's examinations for cryptosporidia organisms of stool specimens submitted by hospitals or general practitioners, of children under 10 years of age, have identified about 10 positive cases per year. By the end of the second week of January 1989 it was apparent that an unusually high number of positive cases was being found, a common source was sought and screening was extended.
On 14 February the Thames water authority was contacted, and a distribution map of water sources was immediately supplied from which the health authority was able with additional information from the Oxford health authority, to correlate the cases with water supplies from the Farmoor treatment works. The evidence was passed to the water authority on 17 February. On 20 February the water authority, in conjunction with the Swindon and Oxford health authorities, advised the public to take precautionary measures including the boiling of water for one minute before use by young children under two and immuno-compromised people.