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 For urban areas, CARB needs to lean into grey water for
turbo-charging carbon sequestration during a time of widespread
water scarcity. This needs to include legalizing kitchen sinks to
greywater, switching to a permissive from a restrictive regulatory
framework, providing incentives for system installation, and
following the lead of world leaders in greywater, including
Australia. We know from the science that increased water
availability results in increased tree growth and thus increased
carbon sequestration during wet years; so can CARB spin up a
statewide greywater incentive and streamlining program, based on
first principles, then order a monitoring program to develop more
specific information on program performance over time? See attached
for a sampling of the evidence showing the safety of kitchen sinks
in greywater systems, from Australia.