Table 2. Water quality of the tap water used in the present study (n = 12).

Parameter (Units)	Mean	SD a	Max	Min
Temperature (°C)	25	1.5	27	22
pH	7.3	0.35	7.7	6.6
Dissolved oxygen (mg/L)	7.1	0.33	7.7	6.7
Total organic carbon (mg/L)	1.9	0.51	2.7	1.1
Inorganic carbon (mg/L)	6.4	0.79	7.7	5.4
Total nitrogen (mg/L)	1.4	0.41	2.1	0.98
Total phosphate (mg/L)	0.010	0.0055	0.021	0
Residual chlorine (mg/L)	0.066	0.044	0.13	0
Conductivity (μs/cm)	154	13	173	136
Turbidity (NTU b)	0.25	0.23	0.88	0.084
Total dissolved solid (mg/L)	140	38	212	88

^aStandard deviation;

^bNephelometric turbidity units.