Section 6522.1 Of Article 1. Generally From California Health And Safety Code >> Division 6. >> Part 1. >> Chapter 4. >> Article 1.
6522.1
. No regulation or ordinance of a district which regulates or
prescribes standards for the installation of plumbing inside of
buildings and structures, shall be effective within any county, city
and county, or city which has adopted an ordinance, regulation, or
code incorporated in an ordinance governing such installations.