Characterization, Microbial Community Structure, and Pathogen Occurrence in Urban Faucet Biofilms in South China

Table 1

The biofilms samples used in this study and water quality parameters at each sampling location.

Samples	A1	A2	A3	A4	A5	A6	A7	A8	A9	A10	A11	A12
Tap material	Stainless steel	PVC	Stainless steel	Cast iron	Cast iron	Stainless steel	Stainless steel	Cast iron	Cast iron	Stainless steel	PVC	PVC
Age (year)	2	1	4	9	8	3	5	12	15	6	1	0.5
pH	7.08	6.8	7.01	6.62	7.11	7.03	6.94	7.35	7.26	6.83	6.98	6.7
TSS	40	49	99	75	81	69	39	80	69	73	52	47
Turbidity	0.6	0.3	0.3	0.2	0.4	0.2	0.1	0.3	0.2	0.1	0.4	0.3
Residual chlorine (mg/L Cl2)	0.55	0.54	0.62	0.46	0.49	0.63	0.65	0.57	0.61	0.62	0.3	0.4
Sulfate (mg/L)	10.4	12.9	31.8	24.2	30.6	13.8	24.2	22	27.8	19.8	17.8	16.5