One hundred Ninty two s mples were collected from (Cooling towers) between the period 1 /l/2004-13/12/2005. The Results Rev a)ecL that physical and chemic:a) analysefor watr samples including Tempera re,, pH and cWodde concentration ranges were f01:md to be l5°C 45°C, 6, 8-7.8- and 0. 2-0.5 mg\L.
Five species of Legion.ella :Were identified, these were Legionella pneumophlla, legionella dumoffii , Legionella Jordans, Legionidla oeakridensis, Legiviiella micdadei.
Legion(!/la - pneu-mophila were predominant followied' by
L.micdadei.
The perc.ent.a.ge occurancc of species were differe during any month of the, year. It was found that the p(!rcentage of occurance of
spccie:s in the summer is more than the other season, and the
percentage of occurance Qf species differs between Jan 2004 and Dec
2005.
The average nun1ber of haeerial species cells was 1000' cells\mi in
the water during the summer season and less_
quring the othe.r ·seasons.
