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What are the effects of sewage on the water of the falag? How does sewage affect soil fertility and quality? What is the effect of sewage on ground cover in the area? The objectives of the research were to clarify the danger of establishing sewage near natural water sources and to alert the local people to the quality of the water and soil of Falag Al-Khafeeji. The research was carried out through the protocol of soil, water and the ground cover using the available equipment of the team and the Department of Health Affairs in Muscat Governorate. The results were as the following: Firstly: Water Results We found all the water characteristics measured using the equipment’s and tools of the program indicate that the water is good compared to the values obtained in the references and also found that the water contains coliform bacteria, which was detected by biological analysis of water by Department of Health Affairs in Muscat Municipality. Secondly: Soil Results Structure: Granularity, consistency: Fragile / easy to dissolve, root ratio: many, rock ratio: medium to low, carbonate ratio: many, PH 9.62, texture Clay loam, 10 YR4 / 1. Thirdly: The results of the ground cover The percentage of positive shadows 78.9, which is evergreen and the rate of greenery is high and the most common types of herb plants are GD. The conclusions were taken after taking measurements available for water proved that water characteristics are good compared with the values that we found in the references but biological analysis of water proved the presence of Coliforms bacteria that emphasize the inappropriateness of water for human use. After analysis of the soil data, we found that it is fertile and there is no negative effect of the current water on the soil because the bacteria in the water is a fecal coliform bacteria from the analysts, which analyze the organic matter and supply the soil with nitrogen, making the soil more fertile. After analyzing ground cover data, we found that most of the available trees are evergreen and that the percentage of high grasses that are used as animal feed in the area confirms soil fertility. The research suggested the following recommendations: 1. The population should be restricted to using falag water in agricultural activities instead of human use. 2. We recommend the people of the region to dig a new source of the falag away from the current water or the creation of engineering solutions to repair the damage in the original source of the falag.