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ACWD customers currently receive water that is well below the Chromium-6 MCL of 10 ppb.
The California Office of Environmental Health Hazard Assessment (OEHHA) established a non-enforceable public health goal (PHG) of 0.02 ppb for Chromium-6 in July 2011. Though the DDW considered the PHG while developing the current MCL, the determination of the MCL must consider not only public health concerns but also the practical feasibility and cost of treatment.
ACWD will continue to monitor for Chromium-6 to ensure our customers receive water that is below all regulatory requirements.