This Guide is one of a series produced by the International Water Association's Specialist Group on Metals and Related Substances in Drinking Water. It is a state-of-the-art compilation of the range of scientific, engineering, regulatory and operational issues concerned with the control of lead in drinking water. Consultation has been obtained from an international team from 26 European countries, Canada and the United States to develop the Guide. It will be of interest to water utility practitioners, health agencies and policy makers. It is intended to support a two-day training course or as a stand alone guide to the control of lead in drinking water.