Template:Pollution sidebar Rashin gurɓataccen yanayi, wani lokacin ana kiransa "ƙaddamar da thermal", shine lalata ingancin ruwa ta kowane tsari da ke canza yanayin ruwan zafi . Gurbacewar yanayi shine tasowa ko faɗuwar zafin jikin ruwa na halitta wanda tasirin ɗan adam ke haifarwa. Rashin gurɓataccen yanayi, ba kamar gurɓatar sinadarai ba, yana haifar da canjin yanayin yanayin ruwa. Kuma Dalilin gama gari na gurɓacewar yanayi shi ne amfani da ruwa azaman sanyaya ta masana'antun wutar lantarki da masana'antu. Guguwa a cikin birni - guguwa ruwan da ke fitarwa zuwa saman ruwa daga saman rufin gidaje, tituna da wuraren ajiye motoci - kuma tafkunan ruwa na iya zama tushen gurɓacewar yanayi. Hakanan ana iya haifar da gurɓacewar yanayi ta hanyar sakin ruwa mai tsananin sanyi daga gindin tafki zuwa koguna masu dumi. Lokacin da aka mayar da ruwan da aka yi amfani da shi azaman mai sanyaya zuwa yanayin yanayi a mafi girman zafin jiki, canjin zafin jiki ba zato ba tsammani yana rage isar da iskar oxygen kuma yana shafar tsarin muhalli .