Potable Water 14-03 Heat traps13-06 Low lead requirements09-15 Grey water and potable water08-05ii Water distribution08-09 PEX at hot water tank08-03/05 Water distribution sizing04-42 Polyethelene pipe used in distribution system04-44 Wirsbo pipe in distribution systems05-02 Potable waterline as heat source05-18 Backflow protection for underground sprinkler system05-19 Potable water and contamination07-01 Water pipe size in renovation