Bacteriological and Physicochemical Studies on Tigris River Near the Water Purification Stations within Baghdad Province

Table 2

Number and types of bacterial species isolated from different water sources.

Bacterial species	Number and types of bacterial species isolated from			M-Z test*	C.S.
	Drinking water of Al-shula houses	Water of stations	Water of Tigris River
E. coli	8	10	30	0.885	NS
Serratia plymuthica	1	0	0	4.995	NS
Klebsiella ornithiolytica	0	0	1	0.749	NS
Klebsiella pneumonia	9	4	14	6.856	S
Klebsiella terrigena	0	0	0	—	—
Pseudomonas aeruginosa	7	16	30	1.169	NS
Pseudomonas fluorescens	1	1	2	0.207	NS
Citrobacter freundii	4	2	5	3.243	NS
Pseudomonas paucimobilis	0	1	1	0.824	NS
Sphingomonas paucimobilis	0	2	1	2.815	NS
Pantoea spp.	0	2	2	1.666	NS
Rahnella aquatilis	0	1	2	0.625	NS
Enterobacter sakazakii	0	3	1	5.309	NS
Enterobacter cloacae	0	1	4	1.378	NS
Enterobacter aerugena	0	0	0	—	—
Proteus mirabilis	0	0	1	0.742	NS
Aeromonas hydrophila	0	1	2	0.625	NS
Vibrio cholera	0	0	3	2.251	NS
Vibrio fluvials	0	0	3	2.251	NS
Serratia ficaria	0	1	1	0.824	NS
Salmonella orizonae	0	1	0	2.909	NS
Total	30	46	103	8.851**	S

*Chi-Square test with 2 d.f. (𝛼=0.05) = 5.991 & (𝛼=0.01) = 9.210.
**Kruskal Wallis test recorded (Sig. at 𝑃=0.012, i.e., Sig. at 𝑃<0.05).