《城市污水再生利用 城市杂用水水质》GB/T18920-2002
序号 项目                               冲厕                道路清扫     消防      城市绿化          车辆冲洗     
1       pH                                 6.0-9.0
2     色/度                                ≤ 30
3      嗅                                 无不快感
4     浊度/NTU                        ≤ 5                      10             10             5                         20
5 溶解性总固体/（mg/L)      ≤ 1500              1500       1000        1000                       -
6 五日生化需氧量
（BOD5）/（mg/L)　          ≤ 10                    15              20           10                        15
7 氨氮/（mg/L)                     ≤ 10                     10              20           10                        20
8 阴离子表面活性剂/（mg/L) 1.0                     1.0              1.0         0.5                       1.0
9 铁/(mg/L)                           ≤ 0.3                      - --                            0.3                           --
10 锰/（mg/L)                      ≤0.1                       - --                            0.1                           --
11 溶解氧/（mg/L)               ≥ 1.0
12 总余氯（mg/L) 接触30min后 ≥1.0，管网末端≥0.2
13 总大肠菌群/（个/L)        ≤ 3