中(zhong)(zhong)山公(gong)用水(shui)(shui)務有(you)(you)限公(gong)司(si)(si)（以(yi)(yi)下(xia)簡稱(cheng)：公(gong)司(si)(si)）前身是創建于(yu)1959年的石岐水(shui)(shui)廠(chang)，2008年隨母公(gong)司(si)(si)吸收合并成為(wei)中(zhong)(zhong)山公(gong)用事業(ye)集團股份有(you)(you)限公(gong)司(si)(si)下(xia)屬全(quan)資(zi)子公(gong)司(si)(si)，公(gong)司(si)(si)名稱(cheng)于(yu)2017年6月由(you)中(zhong)(zhong)山市供水(shui)(shui)有(you)(you)限公(gong)司(si)(si)變(bian)更為(wei)中(zhong)(zhong)山公(gong)用水(shui)(shui)務有(you)(you)限公(gong)司(si)(si)。公(gong)司(si)(si)以(yi)(yi)城市供水(shui)(shui)和污(wu)水(shui)(shui)處理(li)為(wei)主(zhu)，涵蓋水(shui)(shui)質監測、工程設計、施(shi)工安裝、信息技術(shu)、水(shui)(shui)處理(li)技術(shu)研發等(deng)相關業(ye)務。

城市供(gong)水：擁(yong)有中(zhong)山(shan)公(gong)用水務有限(xian)公(gong)司(si)等10家全資(zi)公(gong)司(si)、7家參控股公(gong)司(si)，建有獲(huo)得國家實驗室認可的(de)水質檢測中(zhong)心，目(mu)前日供(gong)水能(neng)力達206萬m3，供(gong)水總量約占中(zhong)山(shan)市的(de)80%，供(gong)水管(guan)道(dao)長度達6500公(gong)里，服務群眾約300萬人。

污(wu)水(shui)處(chu)理(li)(li)及污(wu)水(shui)管網運營服務：擁有(you)(you)中(zhong)山市污(wu)水(shui)處(chu)理(li)(li)有(you)(you)限(xian)公(gong)(gong)司等2家(jia)全資公(gong)(gong)司，代運營中(zhong)山公(gong)(gong)用黃圃(pu)污(wu)水(shui)處(chu)理(li)(li)有(you)(you)限(xian)公(gong)(gong)司，委托運管民眾污(wu)水(shui)處(chu)理(li)(li)廠等5家(jia)污(wu)水(shui)處(chu)理(li)(li)廠，目前日污(wu)水(shui)處(chu)理(li)(li)能力(li)達47萬m3，污(wu)水(shui)處(chu)理(li)(li)總量約占中(zhong)山市的35%以上(shang)；2018年9月，中(zhong)山公(gong)(gong)用組(zu)建(jian)水(shui)環境治理(li)(li)有(you)(you)限(xian)公(gong)(gong)司，承接(jie)中(zhong)心城區污(wu)水(shui)管網、泵站運營服務（約836公(gong)(gong)里(li)管網及18座泵站）。