. 2023 Sep 20;18:100314. doi: 10.1016/j.ese.2023.100314

Table 2.

Water quality measurements of first draw samples.

Parameter		Building A + D (larger and older)									Building B + C (smaller and newer)
		Drinking water fountain (n = 24)			Cold (n = 8)			Hot (n = 56)			Drinking water fountain (n = 22)			Cold (n = 6)			Hot (n = 25)
		Min	$\bar{x}$	max	min	$\bar{x}$	max	min	$\bar{x}$	max	min	$\bar{x}$	max	min	$\bar{x}$	max	min	$\bar{x}$	max
General	Temperature (°C)	11.1	15.45	21.2	20.4	22.75	25.8	18.3	24.25	39.8	11	13.9	21.8	20	21.7	22.8	14.4	22.9	34.4
	pH	7.17	7.44	7.71	7.05	7.28	7.45	7.01	7.3	7.86	7.01	7.23	7.39	7.18	7.3	7.55	6.96	7.32	7.90
	DO (mg L⁻¹)	1.06	2.05	6.15	2.05	3.51	7.52	1.04	3.78	8.44	1.77	2.6	3.4	2.39	3.99	4.87	1.86	5.32	8.03
	Total Cl₂ (mg L⁻¹)	0	0	0.09	0	0.01	0.03	0	0.01	0.08	0	0	0.01	0	0.01	0.02	0	0.01	0.1
Organics	TOC (mg L⁻¹)	0.39	0.46	0.78	0.39	0.46	0.78	0.37	0.55	1.22	0.36	0.44	0.83	0.35	0.43	0.46	0.33	0.23	0.54
Microbiology	TCC (log cells mL⁻¹)	4.22	4.64	5.43	3.71	4.56	5.22	3.68	4.65	5.35	3.44	4.34	4.95	3.68	4.14	4.47	3.44	4.19	4.83
Metal	Cu (μg L⁻¹)	3.57	129	2779	101	332	508	63	373	2044	234	349	845	246	293	348	75	371	679
Metal	Pb (μg L⁻¹)	1.91	2.38	45.4	2.05	2.05	2.05	2.02	2.36	3.77	2.32	2.36	2.39	1.93	2.35	2.78	1.91	2.38	2.39
	Mn (μg L⁻¹)	46.8	88.7	1468	10.7	37.4	78.9	8.14	21.3	119.2	27.0	55.3	116.6	21.2	50.9	69.7	15.3	35.3	141

∗A detailed first draw hot water results are discussed in the SI.