How does drinking water get polluted?
Surface sources of drinking water are easily prone to pollution because of the direct flow of pollutants. Pollutants either get dissolved in water or adhere themselves to the soil particles, and reach surface water sources through runoff and erosion. Groundwater is also at risk from pollution. Groundwater pollution mainly happens from the pollutants that are soluble in water and percolate to the groundwater source with the recharge. Surface water contamination may be easier to remediate than groundwater because of accessibility. Groundwater contamination may take many years, much more effort and money to treat..
