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Groundwater Water Source

People living and working in Nassau and Suffolk Counties are completely dependent on groundwater for all of their freshwater needs. While Long Island is completely surrounded by salt water, the only source of freshwater is precipitation which becomes part of the groundwater system. Precipitation enters the groundwater system, or aquifer, by infiltration through the sandy, porous soil at Long Island’s surface. This underground aquifer system has more than enough water for present demands; however, saving water will ensure that future generations will always have a safe and abundant water supply.