Water Pipes

Prefer copper pipes installed without solders, fluxes, or other filler metals. 

Avoid using copper pipes if your water supply typically has a low pH (<6.5). 

If plastic pipes are selected, choose polypropylene (PP), high density polyethylene (HDPE), or polyethylene of raised temperature (PE-RT) over crosslinked polyethylene (PEX). 

Avoid using polyvinyl chloride (PVC) and chlorinated polyvinyl chloride (CPVC). 

Prefer products with full disclosure of content through Health Product Declarations (HPDs).