<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31306815</termId><termName>plumbing systems</termName><termType>PT</termType><termNote><![CDATA[ The systems within a building that supply water to the occupants and carry off liquid or liquid-suspended wastes; includes pipes, traps, vents, and fixtures, but not sources or destinations outside the building such as wells or septic tanks. ]]></termNote><termCreatedDate>2026-03-30 20:22:34</termCreatedDate><relation><relationType>UF</relationType><termId>31306816</termId><termName>plumbing</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31306817</termId><termName>plumbing system</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31306818</termId><termName>systems, plumbing</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31298981</termId><termName>systems by function</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31306855</termId><termName>[plumbing and stormwater system components]</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31321845</termId><termName>water distribution systems</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31321848</termId><termName>sanitary drainage systems</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31338185</termId><termName>plumbers</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31482043</termId><termName>plumbers</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31346819</termId><termName>water supply systems</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31421732</termId><termName>plumber&apos;s caulking irons</termName><termType>PT</termType></relation></term>  </Zthes>