Comparison of the analyzed parameters with recommended guidelines.

Table 3: Comparison of the analyzed parameters with recommended guidelines.

Parameter	% above WHO guideline	% above CDWQ guideline	% above US. NPDWR guideline	% above EU DWD guideline
Ca	0^a & 80^b	0^a & 20^b	N/A	N/A
Cd	20^a & 0^b	20^a & 0^b	20^a & 0^b	20^a & 0^b
Cr (III)	N/A	N/A	N/A	N/A
Cu	0^a & 0^b	0^a & 0^b	0^a & 0^b	0^a & 0^b
Li	N/A	N/A	N/A	N/A
Mg	0^a & 0^b	0^a & 0^b	0^a & 0^b	0^a & 0^b
Pb	60^a & 0^b	60^a & 0^b	20^a & 0^b	60^a & 0^b
Sr	N/A	N/A	N/A	N/A
Zn	0^a & 0^b	0^a & 0^b	0^a & 0^b	0^a & 0^b

^a and ^b represent the respective % at Kilima-hewa and Mtoni respectively for the analyzed parameters; NA: No guideline available