Nassau County, New York — public water systems

How does Nassau County compare with other New York counties?

Nassau County has the 52nd-most active public water systems among the 100 counties listed for active New York systems in EPA records; among the 64 with 3 or more systems, the median has 94. Its systems report 1,387,479 people served in total, the 3rd-largest county figure in the state and 7.2% of the statewide total. The average system here reports serving 31,534 people, about 13 times the New York average of 2,374. Population figures are what each system reports; people served by more than one system, such as a wholesaler and the town that buys from it, are counted by each.

Where does Nassau County's drinking water come from?

By primary water source, Nassau County's active systems draw on groundwater (40, 91%) and purchased groundwater (4, 9.1%). Overall, all rely mainly on groundwater (including purchased groundwater) and none on surface water, compared with 91% and 8.5% across New York. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, Liberty Utilities New York - Lynbrook, draws primarily on groundwater.

What kinds of water systems operate in Nassau County?

Nassau County's active systems break down as 40 community systems (91%), 1 non-transient non-community systems (2.3%) and 3 transient non-community systems (6.8%). A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. EPA lists their owner types as local government (48%), public/private partnership (36%), private (11%) and state government (4.5%).