Guidelines for Canadian Drinking Water Quality: Guideline Technical Document – Lead




This guideline technical document reviews and assesses all identified health risks associated with lead in drinking water. It assesses new studies and approaches and takes into consideration the availability and limitations of appropriate treatment and analytical technologies. The maximum acceptable concentration (MAC) for total lead in drinking water is 0.005 mg/L (5 µg/L), based on a sample of water taken at the tap and using the appropriate protocol for the type of building being sampled. As current science cannot identify a level under which lead is no longer associated with adverse health effects, lead concentrations in drinking water should be kept as low as reasonably achievable (ALARA).

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Details and history

Published: [March 8, 2019]

Consulted: [January 11 – March 15, 2017] (see all consultations)

Part of topic(s): Guidelines for Canadian Drinking Water Quality

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