In California, lead-free materials must be used for "each component that comes into contact with the wetted surface of pipes and pipe fittings
, plumbing fittings and fixtures." On January 1, 2010, the maximum amount of lead in "lead-free brass" in California was reduced from 4% to 0.25% lead.
This prompted most big box stores to start stocking lead-free brass fittings, nation wide. Check out homedepot.com or lowes.com, you'll find lead-free fittings before you ever tell the website where you're located.