2016 California Plumbing Code, Mechanical Code officially in effect
On Jan. 1, the 2016 editions of the California Plumbing Code and California Mechanical Code went into effect in the state. These editions represent the most current approaches in the plumbing and mechanical fields, IAPMO notes. These codes are embedded within the 2015 editions of the Uniform Plumbing Code and Uniform Mechanical Code with California amendments.