Comparison Between some Water Characters of the Lesser Zap with anImpoundment Ground Water Close to it

The current study is a comparative between the quality of water in the river lesser Zap with an impoundment ground water close to it, The two sampling areas are located in the Kirkuk city. In 2011, monthly samples were collected from both sites for a period of six months. Some physical and chemical analyzes were conducted (water and temperature, electrical conductivity and hardness). As well as positive and negative ions). On the biological side, the total number of bacteria was numerated. The results of the present study showed clear variations in the values of these variables in some months of the year. The total hardness values in lesser Zab ranged between (150 233) mg/ l compared with their values in an impoundment ground water (1075 1820) mg/l. The chloride ion concentration showed clear rise in an impoundment ground water 2749 mg/ l during September month compared with water tributary Zab reaching 80 mg/ l. The positive ions, sodium and potassium, showed a clear increase in an impoundment ground water (1375- 1800) and (4-18) mg / l compared with their concentration in the water lesser Zab (34-87) and (1.6- 2.6) mg / l respectively, while the highest count of bacteria in an impoundment ground water were (30 103) cells / ml (11 103) cells / ml in lesser Zab. / . 2011 ( ) . (1820 233 ) / ( 1075 ( 150 / ( 2749 ) / ( 80 ) / . 18 ) / - 1800 ) ( 4 - ( 1375 103 ) 2.6 ) / ( 30 87- 34 ) ( 1.6 ) 103 ) / . / (