Rainwater as a Source of Drinking Water: Health Impacts and Rainwater Treatment

Table 1

Average Pb concentration in rainwater before and after treatment.

City/regency area	Subdistrict/village	Before treatment (μg/l)	After treatment (μg/l)	Drinking water requirement
Pontianak	Siantan Hulu	201.3	0.75	0.01 mg/l (10 μg/l)
	Siantan Tengah	222.0	0.77
Kubu Raya	Limbung village	44.6	0.85
	Kuala Dua village	58.9	0.47
Mean		131.7	0.71
Median (min.-max.)		101.8 (3.2–363.0)	0.1 (0.1–3.0)
SD		0.1046669	0.0001434
P^a	≤0.001

Source: primary data; ^aT-test (α = 5%); significant at .