ASSESSSMENT OF CHEMICAL PARAMETERS OF GROUND WATER IN HOLLY MAKKAH
Groundwater is a very important resource, particularly in arid regions. In Makkah, which is the religious capital of the kingdom, water supply is provided from the aquifers of many valleys inside and around it, including Al Hussineh and WadiNaman valley that considered tobe important groundwater sources . In this study, the chemical and physicalparameters of different resources of groundwater in Makkah were evaluated. The results of the chemical parameters were compared with the Saudi Arabian Standard Specifications in order to determine the suitability of these water resources for drinking and detect any possible contamination supplied from wells around Makkah through 20km latitude to water sources inside makkah.The results revealed that parameters of Sulfate, Chloride, magnesium and Sodium were respectively at 100.0% in E and W wells, at 83.3% in E and W, at 25.5% in NE and 50.0% in S wells, and 15.0% in which are higher than the standard limits. The fluoride concentration ranged from 0.04 to 2.31 ppm, where 25 %, 80.3% samples showed fluoride less and higher than permissible limit respectively. The NO3 concentration was increased than minimum and maximum permissible limits in all studied wells.