Assessment of the level of some selected heavy metals and physicochemical in Abzana water samples, Kibet woreda, Ethiopia.

This study was conducted to investigate the contamination level of Abzana water in Asano district. Five water samples were collected from different point of Abzana water. Some physicochemical parameters and four heavy metals (Cd, Pb, Cr and Mn) concentration were analyzed using standard procedures, and the results were compared with World Health Organization guideline values. The results of the present study have shown the temperatures of all sampling station range between 18.9 and 19.2 °C. The pH was found to be of range from 6.54 to 7.11, whereas the electrical conductance was 1.745 × 10² to 2.06 × 10² (µS/cm). In addition, the lowest value of total dissolved solids was 1.314 × 10² mg/L and the highest was 1.401 × 10² mg/L. In contrast, four heavy metals were analyzed and compared with standards of drinking water. The results indicate that the mean concentration of Cd (6.64 × 10⁻³ mg/L) exceeded the standards, but the mean concentration of Mn, Pb and Cr was founds within the standard limit at 7.608 × 10^–2, 8.10 × 10^–3 and 3.5442 × 10^–2 mg/L, respectively. The concentrations of the investigated metal (Cr, Pb and Mn) and all physicochemical result of Abzana water from Asano kebele were found below the guidelines for drinking water. However, the concentration of Cd in Abzana water sample was found above the permissible limit of World Health Organization standards. Therefore, it was not safe for drinking and health effect according metals what we have studied here. [ABSTRACT FROM AUTHOR]