Assessment of Levels, Speciation, and Toxicity of Trace Metal Contaminants in Selected Shallow Groundwater Sources, Surface Runoff, Wastewater, and Surface Water from Designated Streams in Lake Victoria Basin, Uganda

Table 11

A summary of the percentage of samples of surface water from selected streams and waterways in Lake Victoria basin, Uganda, with mean levels of trace elements above and below the WHO guidelines and Ugandan standards.

Element	B	Ni	Cu	Zn	As	Cd	Ba	Pb
Springs above Ugandan guidelines	0	0	6.7	0	0	0	0	0
Springs below Ugandan guidelines	100	100	93.3	100	100	100	100	100
Springs above WHO guidelines	0	33.3	0	0	0	0	13.4	40
Springs below WHO guidelines	100	66.7	100	100	100	100	86.6	60