Treated river water will contain lower concentrations of iron and manganese so that the water will no longer stain sidewalks, appliances, fixtures, etc. The hardness of the water will be approximately 15 grains per gallon, about 30 percent lower than the well water, depending on which well serves water to your neighborhood. The dissolved mineral content will be lower by approximately 30 percent. Although the well water has chloramine residual disinfectant, the concentration varies throughout the City. The treated water will have a more consistent chloramine residual concentration, in the range of 2 to 3 mg/L.