Table 7.

Level of microbial contamination in chlorinated urban water sources.

Sample	Coliforms (Log Cfu/ml)	Escherichia coli (Log Cfu/ml)	Clostridium pafringens (Log Cfu/ml)	Staphylococcus aureus (Log Cfu/ml)
TAP5	200±4.9a	0.0±0.0a	0.0±0.0a	475±30.67b
TAP4	430±10.8a	23±0.67c	0.0±0.0a	0.0±0.0a
TAP3	710±23.6a	13±1.9b	0.0±0.0a	0.0±0.0a
TAP 1	0.0±0.0a	0.0±0.0a	775.0±59.5b	125.7±8.09b
TAP2	15000±45.3b	0.0±0.0a	12.5±1.71a	75.0±4.69b
Mean	3268	7.2	157.5	135.14
cv %	19.5	16.7	10.7	6.4

(1) Values are means of two determinations ± standard deviations.

(2) Values with the same letters on the same column are not significantly different at 5 % level of significance.