§ Mrs. Renée Shortasked the Secretary of State for Social Services what infomation he has as to the number of social services staff who have been employed in the west midlands region in each single year since 1979 in the following sectors: old people's homes, home help work, 486W Nitrate concentrations much in excess of 100 milligrams per litre can lead to the risk of infantile methaemoglobinaemia— and exceedingly rare condition in the United Kingdom. Where concentrations exceed 100 milligrams in the water supply at any one time, low-nitrate water is provided for infant feeding.