Brass fittings and lead solder have been implicated as a source of lead in drinking water. Occasionally investigations into infringements are assigned to fittings/solder when no evidence of lead service pipes can be identified. Brass fittings are pervasive and thus if they were a substantial source of lead infringements there would be a lack of dependence on LPD. On the basis of the analysis in section 0 it is estimated that the risk of infringement from lead service pipes is about twenty-eight times that of a property without a lead service pipe. However, there are a lot more properties without lead service pipes and when this is taken into account the likelihood of an infringement from such properties was nearer 1 in 8. This is consistent with the experience that most infringements are associated with properties with lead service pipes and the observed dependence of lead non-compliance on the proportion of properties with lead service pipes.