A submetering system that measures only a portion of a dwelling unit’s water usage, including, but not limited to, a system that measures only hot water usage, shall not be subject to this chapter if the system was first put in service before January 1, 2018.

(Added by Stats. 2016, Ch. 623, Sec. 2. (SB 7) Effective January 1, 2017. Section operative January 1, 2018, pursuant to Sec. 1954.218.)