A Review of Roof Harvested Rainwater in Australia

Table 4

Trace metals seasonal variability in rainwater harvested in Newcastle [56] (in ppm).

Parameters	Health limit	Site 1		Site 2
		Winter	Summer	Winter	Summer
Silver	0.1	0.032	0.009	0.047	0.014
Cadmium	0.002	0.18	0.17	0.05	0.10
Lead	0.01	2.78	10.5	3.59	5.77
Uranium	0.017	0.003	0.003	0.002	0.002
Manganese	0.5	20.0	82.3	6.95	12.1
Chromium (Cr^6)	0.05	0.09	0.21	0.03	0.05
Arsenic	0.01	0.25	0.55	0.08	0.09
Zinc	3	518	725	77.2	150
Copper	2	0.08	0.25	0.10	0.16
Nickel	0.02	0.29	0.16	1.47	2.72

Aesthetic only for zinc.