In June 2015, the government published a national strategy to reduce exposure to lead in drinking water. The strategy aims to address a legacy issue of public exposure to lead. Lead piping and plumbing was commonly used in houses built up to and including the 1970s and remains a potential source of lead. Long-term exposure to lead can cause adverse health effects. Infants, young children and pregnant women are most at risk from the health effects of lead in drinking water.