The Lead And Copper Rule Revisions (LCRR for short) is the revised version of the EPA's initial regulation for copper and lead in drinking water. There are several reasons why this revision was made: to better protect children and communities from lead exposure (with a particular focus on child care facilities and schools), to provide information to communities on lead in drinking water, and to encourage better testing, corrosion control practices, and lead service line replacement with funding and guidance.