المجلة الدولية للعلوم والتقنية

This study was conducted in the Anjila-Janzour area west of Tripoli, with the aim of studying the extent of groundwater pollution with sewage, whether sewage, agricultural or industrial, where (28) samples were taken from groundwater wells of a number of farms near and far from the well (Al-Laquon), where the nearest farm was 550 meters away from the well, and the farthest farm was 4 kilometers away, and chemical and microbiological analyses and heavy elements analysis were conducted for all samples, and through the results obtained, the concentrations (pH) were within the permissible limit (6 - 8), while the total dissolved salts (TDS) were mostly more than the permissible limit, which is (ppm 1000) according to the specification adopted in the study [2], and from the chemical point of view, it was found that there was a variation in the concentrations of both iron (Fe) and copper (Cu), and all results were within the permissible limits, which is (ppm 0.31.0 ppm -), as for the elements sodium (Na) and chloride (Cl), there was pollution and the results were more than the permissible limit (ppm 200 - 250 ppm) respectively, and it was also found that there was an increase in the concentration of nitrates (No₃) and it was more than the permissible limit (45 ppm) ,As for the microbiological aspect, it was proven that there was microbial pollution with E.coli bacteria in the groundwater samples of most farms, and this indicates the presence of sewage leakage into the groundwater wells. As for the analyses of heavy elements, pollution with lead (Pb) and cadmium (Cd) was found in most samples.Through the results of this study, it can be said that most of the farms in the study area suffer from microbial contamination with E.coli bacteria due to the presence of the cesspool (lagoon), and chemical contamination with some elements such as sodium (Na) and chloride (Cl) was also found, and nitrate contamination (No₃) was also found due to the excessive use of pesticides for nitrogen fertilizers, and also it was proven through the analysis that there is contamination with heavy elements (Pb - Cd) and the reason is likely to be the presence of some industrial activities in the study area............. Keywords:..... Microbiology, Heavy Elements, Cemetery (lagoon), Wastewater, Groundwater Wells, Water Pollution