Minimum and Maximum concentrations measured at Kilima-hewa area and Mtoni area.

Table 2: Minimum and Maximum concentrations measured at Kilima-hewa area and Mtoni area.

Parameters	Lowest concentrations (mg/L)	Highest concentrations (mg/L)
Ca	0.0045^a & 20.508^b	90.76^a & 240.17^b
Cd	0.0007^a & < DL^b	48.59^a & < DL^b
Cr (III)	< DL^a & 0.0254^b	0.032^a & 0.0268^b
Cu	< DL^a & 0.0005^b	0.0272^a & 0.0038^b
Li	0.0004^a & 0.0075^b	0.0613^a & 0.0484^b
Mg	0.0047^a & 2.325^b	10.69^a & 12.800^b
Pb	< DL^a,b	0.0178^a & 0.0034^b
Sr	0.1722^a & 0.0073^b	0.9604^a & 0.0421^b
Zn	0.0017^a & 0.0019^b	0.0499^a & 0.0098^b

^a and ^b stand for respective concentrations at Kilima-hewa and Mtoni respectively; DL: Detection Limit