Flexi Says: Spring water is ground water that flows to the surface. Bottled water advertised as spring water is usually bottled from an underground or a surface source just after making it safe for human consumption, without too much modification or processing. However, the groundwater that is the source of the spring water may contain contaminants from pollution that remain in the bottled water. Groundwater pollutants are the same as surface water pollutants: municipal, agricultural, and industrial. When pollutants seep into the ground and enter the aquifer they can be carried far from the original source. About 25% of the usable groundwater and 45% of the municipal groundwater supplies in the United States are polluted with contaminants.