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Table 2

Comparison of FAC after treating with WaterGuard or Aquatabs

	Single dose							Double dose
		30 min			24 h			30 min			24 h
NTU	N	WG	AQ	Overall mean	WG	AQ	Overall mean	WG	AQ	Overall mean	WG	AQ	Overall mean
1–5	3	1.56	1.56	1.56	0.77	0.74	0.75	2.14	2.03	2.08	1.14	1.12	1.13
6–10	2	1.45	1.44	1.45	0.68	0.67	0.67	1.55	1.78	1.67	0.93	1.11	1.02
11–20	3	0.78	1.03	0.91	0.38	0.18	0.28	1.34	1.69	1.52	0.62	0.96	0.79
21–30	5	0.12	0.29	0.21	0.02	0.04	0.03	0.72	1.04	0.89	0.39	0.40	0.39
31–50	7	0.03	0.23	0.13	0.01	0.04	0.02	0.71	1.04	0.88	0.27	0.39	0.33
51–100	14	0.02	0.17	0.09	0.00	0.03	0.01	0.56	1.03	0.79	0.13	0.37	0.25
>100	9	0.00	0.00	0.00	0.00	0.00	0.00	0.01	0.09	0.00	0.00	0.00	0.00

	Single dose							Double dose
		30 min			24 h			30 min			24 h
NTU	N	WG	AQ	Overall mean	WG	AQ	Overall mean	WG	AQ	Overall mean	WG	AQ	Overall mean
1–5	3	1.56	1.56	1.56	0.77	0.74	0.75	2.14	2.03	2.08	1.14	1.12	1.13
6–10	2	1.45	1.44	1.45	0.68	0.67	0.67	1.55	1.78	1.67	0.93	1.11	1.02
11–20	3	0.78	1.03	0.91	0.38	0.18	0.28	1.34	1.69	1.52	0.62	0.96	0.79
21–30	5	0.12	0.29	0.21	0.02	0.04	0.03	0.72	1.04	0.89	0.39	0.40	0.39
31–50	7	0.03	0.23	0.13	0.01	0.04	0.02	0.71	1.04	0.88	0.27	0.39	0.33
51–100	14	0.02	0.17	0.09	0.00	0.03	0.01	0.56	1.03	0.79	0.13	0.37	0.25
>100	9	0.00	0.00	0.00	0.00	0.00	0.00	0.01	0.09	0.00	0.00	0.00	0.00

NTU = nephelometric turbidity units; WG = WaterGuard liquid; AQ = Aquatabs; N = number of water sources; FAC = free available chlorine.