On April 17, 2024, the State Water Resources Control Board (SWRCB) voted to adopt the final CrVI MCL of 10 µg/L. DDW staff indicated the next step would be to submit information to the California Department of Finance, and then submit the final regulation to the Office of Administrative Law (OAL) no later than June 15, 2024. If all proceeds according to schedule, the effective date of the CrVI MCL would be October 1, 2024.
Title 22 regulations (section 64432 (b)) states, “Unless directed otherwise by the State Board, each community and nontransient-noncommunity water system shall initiate monitoring for an inorganic chemical within six months following the effective date of the regulation establishing the MCL.”
