On September 18, 2008, members of the Total Coliform Rule/Distribution System Advisory Committee (TCRDSAC) signed an Agreement in Principle (AIP). The AIP recommended revisions to the 1989 Total Coliform Rule (TCR). It included research needed to better understand potential public health impacts from conditions in the distribution system.

• Total Coliform Rule/Distribution System Advisory Committee Agreement in Principle (PDF) (PDF)(41 pp, 2 MB, 2008)