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 14

Results for risk assessment with respect to zinc and lead for selected surface water samples.

Sample name	Local HC5 (dissolved) (µg/L)	BioF	Bioavailable zinc concentration (µg/L)	RCR	Local HC5 (dissolved) (µg/L)	BioF	Bioavailable lead concentration (µg/L)	RCR
River Mpanga	75.47	0.14	2.05	0.19	65.88	0.02	0.09	0.08
Nakivubo Channel	149.16	0.07	4.76	0.44	75.30	0.02	0.17	0.14
Lubigi Channel	183.54	0.06	34.68	3.18	78.08	0.02	1.50	1.25
Kibenge Hot Springs	105.39	0.10	1.22	0.11	68.61	0.02	0.03	0.03
River Nyamwamba	66.13	0.16	3.82	0.35	65.57	0.02	0.04	0.04
Kitagata Hot Springs	233.22	0.05	0.96	0.09	86.05	0.01	0.07	0.06
Kilembe Mine tailings	84.19	0.13	6.73	0.62	30.24	0.04	0.10	0.09
Mulago Channel	62.55	0.17	4.34	0.40	40.48	0.03	0.09	0.07
Bugoloobi Channel	74.31	0.15	74.19	6.81	66.34	0.02	0.50	0.41
Lugogo Channel	75.77	0.14	2.11	0.19	40.80	0.03	0.03	0.02
Lugazi Channel	150.28	0.07	15.16	1.39	67.58	0.02	0.51	0.43
Jinja Landfill leachate	111.33	0.10	23.50	2.16	77.56	0.02	0.46	0.38
Kiteezi Landfill leachate	623.74	0.02	4.32	0.40	92.51	0.01	1.29	1.07