PEX subject to environmental review by California's Building Standards Commission; local jurisdictions can go ahead with their own approval of the use of PEX.
The California Court of Appeals in Los Angeles issued a ruling last November that PEX pipe used in building, plumbing and fire codes will now be subject to environmental review by California's Building Standards Commission in the 2001 plumbing code. The decision was finalized Dec. 15, 2004, when the appeals court reissued the original November decision, which will now stand as a published precedent in the state.
However, local jurisdictions can go ahead with their own approval of the use of PEX in counties and cities.