Abstract: Water is an important source for several uses. Water from surface and groundwater is used extensively to get the various industrial and domestic demands. Increased industrialization and urbanization discharges wastewater in the environment without treatment. By the infiltration and runoff, The water reaches subsurface and water above the ground and pollutes fresh water. Groundwater treatment is costlier and requires proper assessment. The area selected for study is Udupi taluk, Karnataka state. The study says that in Udupi region the soil is sensitive and here the soil is lateritic, there is a chance that the soil induces iron content in water which may increases concentration of iron in water. According to BIS 10500:2012 the limit of iron concentration in water is 0.3mg/lt. If iron content in water exceeds from 0.3mg/lt, it causes various health effects and waterborne diseases