Table 1.

Average levels of physico-chemical parameters in Mvudi River.

Months	pH	Turbidity (NTU)	EC (mS/m)
January	7.4 ± 0.04	429 ± 31	10.5 ± 0.08
February	7.3 ± 0.04	20.4 ± 4.3	15.9 ± 0.66
March	7.7 ± 0.16	17.6 ± 8.2	13.6 ± 1.8
April	7.2 ± 0.22	8.0 ± 0.67	12.8 ± 0.62
May	7.6 ± 0.05	7.8 ± 3.5	16.1 ± 2.13
June	7.6 ± 0.05	1.9 ± 1.16	13.8 ± 1.67
DWAF guidelines	6–9	<0.1	<70
WHO guidelines	6.5–9.5	<0.1	600