EPA has recently published a memo to address the requirements pertaining to maintenance of optimal corrosion control treatment, in situations in which a large water system ceases to purchase treated water and switches to a new drinking water source.
More information about the Lead and Copper Rule Requirements
You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.- Lead and Copper Rule Requirements for Optimal Corrosion Control Treatment for Large Drinking Water Systems (PDF)(2 pp, 522 K, November 3rd 2015)