家庭(ting)用(yong)水(shui)(shui)污(wu)(wu)(wu)(wu)染(ran)(ran)(ran)的(de)原因主(zhu)(zhu)要(yao)包括水(shui)(shui)源污(wu)(wu)(wu)(wu)染(ran)(ran)(ran)、自來水(shui)(shui)余氯殘留以及(ji)自來水(shui)(shui)運(yun)(yun)輸(shu)(shu)管(guan)道污(wu)(wu)(wu)(wu)染(ran)(ran)(ran)等等。這(zhe)(zhe)三個是(shi)(shi)飲用(yong)水(shui)(shui)污(wu)(wu)(wu)(wu)染(ran)(ran)(ran)最主(zhu)(zhu)要(yao)的(de)途徑，其(qi)中尤其(qi)是(shi)(shi)水(shui)(shui)源污(wu)(wu)(wu)(wu)染(ran)(ran)(ran)以及(ji)運(yun)(yun)輸(shu)(shu)管(guan)道污(wu)(wu)(wu)(wu)染(ran)(ran)(ran)，這(zhe)(zhe)兩(liang)個污(wu)(wu)(wu)(wu)染(ran)(ran)(ran)是(shi)(shi)現在(zai)(zai)不(bu)可避免(mian)。這(zhe)(zhe)是(shi)(shi)由(you)(you)于通(tong)常水(shui)(shui)源污(wu)(wu)(wu)(wu)染(ran)(ran)(ran)是(shi)(shi)由(you)(you)于工業(ye)用(yong)水(shui)(shui)，農(nong)業(ye)用(yong)水(shui)(shui)等排污(wu)(wu)(wu)(wu)處理(li)沒做好的(de)原因，而自來水(shui)(shui)運(yun)(yun)輸(shu)(shu)管(guan)道污(wu)(wu)(wu)(wu)染(ran)(ran)(ran)則(ze)是(shi)(shi)由(you)(you)于我們的(de)自來水(shui)(shui)是(shi)(shi)經過漫長的(de)高樓(lou)水(shui)(shui)塔、水(shui)(shui)箱等設(she)施，在(zai)(zai)這(zhe)(zhe)個運(yun)(yun)輸(shu)(shu)當中不(bu)可避免(mian)地(di)會有(you)一(yi)些污(wu)(wu)(wu)(wu)染(ran)(ran)(ran)物，這(zhe)(zhe)些污(wu)(wu)(wu)(wu)染(ran)(ran)(ran)物互相作用(yong)之(zhi)后，就會產(chan)生(sheng)一(yi)些有(you)毒的(de)化學物質。