ENVIRONMENTAL AND HEALTH REFLECTIONS OF TOTAL ORGANIC CARBON AND HEAVY ELEMENTS ON DRINKING WATER IN HAWIJA NORTH IRAQ

The research examined the impact of heavy elements and total organic carbon on drinking water in Hawija city northern Iraq. The concentrations of heavy elements (aluminum, lead and iron) were evaluated for raw and treated water for five months of the year. Aluminum and lead concentrations were high in raw and treated water and exceeded the limit by WHO standards where they were (0.2 mg/l) (0.01mg) respectively. Iron element for raw and treated water is within WHO standards. With regard to physical and chemical characteristics such as electrical conductivity, PH, Turbidity, hardness, sulfates and total dissolved salts, they were within the permissible limits, except the turbidity, which was high in raw and treated water, except ALHawija Technical Institute. The total organic carbon content (TOC) was calculated for raw water models over five months of the year and carcinogenic compounds represented by the Tri Halomethan (THM) group using a computational relationship between the value of TOC and THM. Statistical analysis was performed using SPSS to find a correlation between Total Organic Carbon content (TOC) and compounds(THM), shows that the correlation coefficient between the constant variable (TOC) and (THM) was a statistical function at a moral level 0.01 where the value of the correlation coefficient (R=1.00) indicated appositive exorcist correlation between the two variables.