中山公(gong)(gong)(gong)用水(shui)(shui)(shui)(shui)務有(you)限(xian)(xian)公(gong)(gong)(gong)司(si)(si)(si)(si)（以(yi)下(xia)簡(jian)稱(cheng)(cheng)：公(gong)(gong)(gong)司(si)(si)(si)(si)）前(qian)身是創(chuang)建于1959年(nian)的石岐水(shui)(shui)(shui)(shui)廠，2008年(nian)隨母公(gong)(gong)(gong)司(si)(si)(si)(si)吸收合并成為(wei)(wei)中山公(gong)(gong)(gong)用事業集(ji)團(tuan)股份有(you)限(xian)(xian)公(gong)(gong)(gong)司(si)(si)(si)(si)下(xia)屬全資子公(gong)(gong)(gong)司(si)(si)(si)(si)，公(gong)(gong)(gong)司(si)(si)(si)(si)名稱(cheng)(cheng)于2017年(nian)6月由(you)中山市供水(shui)(shui)(shui)(shui)有(you)限(xian)(xian)公(gong)(gong)(gong)司(si)(si)(si)(si)變更為(wei)(wei)中山公(gong)(gong)(gong)用水(shui)(shui)(shui)(shui)務有(you)限(xian)(xian)公(gong)(gong)(gong)司(si)(si)(si)(si)。公(gong)(gong)(gong)司(si)(si)(si)(si)以(yi)城市供水(shui)(shui)(shui)(shui)和污水(shui)(shui)(shui)(shui)處理為(wei)(wei)主，涵(han)蓋水(shui)(shui)(shui)(shui)質監測、工程設計、施工安(an)裝(zhuang)、信息技術(shu)、水(shui)(shui)(shui)(shui)處理技術(shu)研發(fa)等相關業務。

城市供水(shui)(shui)：擁有中山公(gong)用水(shui)(shui)務有限公(gong)司等10家全資(zi)公(gong)司、7家參(can)控股公(gong)司，建有獲得(de)國(guo)家實驗室認(ren)可的(de)水(shui)(shui)質檢測中心，目(mu)前日供水(shui)(shui)能力達(da)206萬m3，供水(shui)(shui)總量約占中山市的(de)80%，供水(shui)(shui)管道長(chang)度達(da)6500公(gong)里(li)，服(fu)務群(qun)眾約300萬人。

污水(shui)處(chu)(chu)理(li)(li)及污水(shui)管(guan)(guan)(guan)網運營(ying)服務：擁有中山市污水(shui)處(chu)(chu)理(li)(li)有限公(gong)司等2家全資公(gong)司，代(dai)運營(ying)中山公(gong)用(yong)黃(huang)圃污水(shui)處(chu)(chu)理(li)(li)有限公(gong)司，委(wei)托運管(guan)(guan)(guan)民(min)眾污水(shui)處(chu)(chu)理(li)(li)廠等5家污水(shui)處(chu)(chu)理(li)(li)廠，目前日(ri)污水(shui)處(chu)(chu)理(li)(li)能力達(da)47萬m3，污水(shui)處(chu)(chu)理(li)(li)總(zong)量約占中山市的35%以上；2018年9月，中山公(gong)用(yong)組建水(shui)環境治理(li)(li)有限公(gong)司，承接(jie)中心(xin)城區污水(shui)管(guan)(guan)(guan)網、泵(beng)站運營(ying)服務（約836公(gong)里管(guan)(guan)(guan)網及18座泵(beng)站）。