<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31473236</termId><termName>sanitary sewers</termName><termType>PT</termType><termNote><![CDATA[ Sewers that carry industrial or residential liquid and solid wastes but not ground, surface, or storm waters. For parts of building plumbing systems designed to dispose of similar wastes, use "sanitary drainage systems." ]]></termNote><termCreatedDate>2026-03-30 21:07:21</termCreatedDate><relation><relationType>UF</relationType><termId>31473237</termId><termName>sanitary sewer</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31473238</termId><termName>sewers, sanitary</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31459971</termId><termName>sewers by function</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31321848</termId><termName>sanitary drainage systems</termName><termType>PT</termType></relation></term>  </Zthes>