Lead and Copper Monitoring
San Gabriel Valley Water Company (“San Gabriel”) has been monitoring lead and copper concentrations at customer taps throughout its distribution system to comply with the Lead and Copper Rule (“LCR”) since the late 1990s. The LCR is a federal regulation enforced by the California State Water Resources Control Board, Division of Drinking Water that requires water providers to collect lead and copper samples from customer taps every three years. If lead concentrations exceed an action level of 15 parts per billion or copper concentrations exceed an action level of 1.3 parts per million in more than 10% of customer taps sampled, the company must take action to control the problem.
San Gabriel has never exceeded the 10% action level in any of its lead and copper monitoring events since the rule went into effect in 2014. For detailed results of our lead and copper monitoring, please refer to our Annual Water Quality Reports.
For more information about the Lead and Copper Rule and lead in drinking water, please visit these websites:
State Water Resources Control Board, Division of Drinking Water:
Lead and Copper Rule for Drinking Water
United States Environmental Protection Agency:
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