Graham Sustainability Institute

Water Center

Supporting Implementation of Michigan’s Revised Lead and Copper Rule

In June 2018, Michigan adopted the country’s strictest Lead and Copper Rule (LCR). The primary changes included reducing the lead action level from 15 parts per billion (ppb) to 12 ppb, requiring a lead service line inventory by each water utility and full lead service line replacement for all Michigan properties over the next 20 years, and significantly modified the water sampling protocol. The goal of the revised LCR is to safeguard public health from lead exposure through drinking water.


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