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["广州市番禺区供水企业出厂水42项常规指标检测情况表（2月份）"]
["检测数据由广州市水务科学研究院有限公司提供"]
["序号","指标","单位","限值","广州市番禺石碁自来水有限公司"]
[1,"总大肠菌群","MPN/100mL","不得检出","未检出"]
[2,"耐热大肠菌群","CFU/100mL","不得检出","未检出"]
[3,"大肠埃希氏菌","MPN/100mL","不得检出","未检出"]
[4,"菌落总数","CFU/mL","100","5"]
[5,"砷","mg/L","0.01","<0.001"]
[6,"镉","mg/L","0.005","<0.004"]
[7,"铬（六价）","mg/L","0.05","<0.004"]
[8,"铅","mg/L","0.01","0.00008"]
[9,"汞","mg/L","0.001","<0.00005"]
[10,"硒","mg/L","0.01","<0.0004"]
[11,"氰化物","mg/L","0.05","<0.002"]
[12,"氟化物","mg/L","1.0","0.2"]
[13,"硝酸盐（以N计）","mg/L","10","1.77"]
[14,"三氯甲烷","mg/L","0.06","0.0080"]
[15,"四氯化碳","mg/L","0.002","<0.0001"]
[16,"溴酸盐（使用臭氧时）","mg/L","0.01","—"]
[17,"甲醛（使用臭氧时）","mg/L","0.9","—"]
[18,"亚氯酸盐（使用二氧化氯消毒时）","mg/L","0.7","—"]
[19,"氯酸盐（使用复合二氧化氯消毒时)","mg/L","0.7","—"]
[20,"色度（铂钴色度单位）","度","15",5]
[21,"浑浊度（散射浊度单位）","NTU","1","0.2"]
[22,"臭和味","无量纲","无异臭、异味","无异臭、异味"]
[23,"肉眼可见物","无量纲","无","无"]
[24,"pH","无量纲","6.5-8.5","7.4"]
[25,"铝","mg/L","0.2","0.100"]
[26,"铁","mg/L","0.3","<0.0045"]
[27,"锰","mg/L","0.1","<0.0005"]
[28,"铜","mg/L","1.0","<0.009"]
[29,"锌","mg/L","1.0","0.004"]
[30,"氯化物","mg/L","250","17.9"]
[31,"硫酸盐","mg/L","250","24.9"]
[32,"溶解性总固体","mg/L","1000","176"]
[33,"总硬度(以CaCO3计）","mg/L","450","103"]
[34,"耗氧量（CODMn法，以O2计）","mg/L","3","0.96"]
[35,"挥发酚类（以苯酚计）","mg/L","0.002","<0.001"]
[36,"阴离子合成洗涤剂","mg/L","0.3","<0.050"]
[37,"总α放射性","Bq/L","0.5","0.032"]
[38,"总β放射性","Bq/L","1","0.216"]
[39,"氯气及游离氯制剂（游离氯）","mg/L","≥0.3且≤4","0.97"]
[40,"一氯胺（总氯）","mg/L","≥0.5且≤3","1.38"]
[41,"臭氧（O3）","mg/L","0.3","—"]
[42,"二氧化氯（ClO2）","mg/L","≥0.1且≤0.8","—"]
["注:1.执行标准《生活饮用水卫生标准》（GB 5749-2006）。\n    2.按照国家标准检测频率要求，每月公布常规42项指标。数据每月中旬更新。\n    3.供水范围：番禺区石碁镇、大龙街。"]