604.2 Lead Content.

The maximum allowable lead content in pipes, pipe fittings, plumbing fittings, and fixtures intended to convey or dispense water for human consumption shall be not more than a weighted average of 0.25 percent with respect to the wetted surfaces of pipes, pipe fittings, plumbing fittings, and fixtures. For solder and flux, the lead content shall be not more than 0.2 percent where used in piping systems that convey or dispense water for human consumption. Exceptions: (1) Pipes, pipe fittings, plumbing fittings, fixtures, or back flow preventers used for nonpotable services such as

(4) Trenches having a depth greater than 24

inches. Installers of CPVC pipe within residential structures shall use non-latex thin gauge (4 mil- limeters) nitrile gloves, or other gloves provid- ing an equivalent or better degree of protection during the installation of the CPVC plumbing system. Gloves shall be provided to all workers by the contractor, or plumbing subcontractor, and shall be replaced upon contamination by cements. 604.1.2 PEX. [HCD 1 & HCD 2] All installations of PEX pipe where it is the initial plumbing piping installed in new construction shall be flushed twice over a period of at least one week. The pipe system shall be first flushed for at least 10 minutes and then filled and allowed to stand for no less than 1 week, after which all the branches of the pipe system must be flushed long enough to fully empty the contained volume. This provision shall not apply to the installation of PEX pipe where it replaces an existing pipe system of any material. (1) At the time of fill, each fixture shall have a remov-

able tag applied stating:

(1) Pipes, pipe fittings, plumbing fittings, fixtures, or back flow preventers used for nonpotable services such as manufacturing, industrial processing, irrigation, outdoor watering, or any other uses where the water is not used for human consumption. (2) Flush valves, fill valves, flushometer valves, tub fillers,

shower valves, service saddles, or water distribution

At the time of fill, each fixture shall have a remov-

able tag applied stating: (a) “This new plumbing system was first filled and

_flushed on ______ (date) by ____________

“This new plumbing system was first filled and

_flushed on ______ (date) by ____________ (name). The State of California requires that the system be flushed after standing at least one week after the fill date specified above. If this

(2) Flush valves, fill valves, flushometer valves, tub fillers,

shower valves, service saddles, or water distribution main gate valves that are 2 inches (50 mm) in diameter or larger. 604.2.1 Lead Content of Water Supply Pipe andFittings. Pipes, pipe fittings, valves, and faucets utilized in the water supply system for non-drinking water applications shall have a maximum of 8 percent lead content.