<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31442355</termId><termName>water treatment plants</termName><termType>PT</termType><termNote><![CDATA[ Facilities of the public water system designed to purify by altering the physical, chemical, biological, or radiological quality of the water or to remove any contaminants. ]]></termNote><termCreatedDate>2026-03-30 20:59:12</termCreatedDate><relation><relationType>UF</relationType><termId>31442356</termId><termName>plants, water treatment</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31442357</termId><termName>treatment plants, water</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31442358</termId><termName>water purification plants</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31442359</termId><termName>water treatment plant</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31416912</termId><termName>water distribution structures</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31459955</termId><termName>sewage treatment plants</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31459962</termId><termName>desalination plants</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31459967</termId><termName>filtration plants</termName><termType>PT</termType></relation></term>  </Zthes>