دراسة الخواص الفيزيائية والكيميائية والميكروبيولوجية في آبار المدارس ببلدية تاجوراء

A study was conducted to assess the quality of well water in schools located within the Tajoura Municipality, which rely entirely on groundwater to meet their needs. Physical, chemical, and biological analyses were conducted on water samples from the schools. Forty-five samples were collected from 15 schools, and the analyses showed elevated levels in several physical and chemical analyses. pH values were within the permissible limits in all samples, ranging from 6.92 to 7.88. Electrical conductivity recorded high levels in most samples, ranging from 639 to 12410 µs/cm. As for total hardness, all samples showed high values, with the Mujahid Muhammad School sample recording the highest value, reaching 2061 mg/L. Total dissolved solids (TDS) concentrations recorded high levels in all samples, ranging from 415 to 8066 mg/L. Sodium recorded high concentrations in the Al-Resala and Al-Hassan Ibn Al-Haitham School samples, exceeding 1700 mg/L. Potassium values also showed variations between samples, ranging from 5.95 to 147 mg/L. As for calcium and magnesium concentrations, most samples were below the permissible limits. Bicarbonate also recorded high values, with the highest value reaching 671 mg/L. Bacterial analysis results showed that most school water samples showed bacterial contamination, with the exception of three samples. As for E. coli, all samples were found to be free of it, except for the water sample from Sayyid al-Shuhada School, where the bacteria was detected... Keywords: Well Water Quality, Physicochemical Properties, Biological Properties, Tajoura, School Water Contamination.