Choosing Kitchen Faucet: water contamination less with Pex or Metal alloys construction

My concern is lead contamination vs plastic contamination in water going through a kitchen faucet. Delta faucets use core and shell construction, so that pex lines run from the valves… My concern is lead contamination vs plastic contamination in water going through a kitchen faucet. Delta faucets use core and shell construction, so that pex lines run from the valves…Read MoreGreenBuildingAdvisor