Public water system · NY2900000
ActiveTown of Hempstead Water Department
At a glance
Town of Hempstead Water Department (PWSID NY2900000) is an active community water system in Nassau County, New York. It reports serving 110,000 people through 34,956 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's Safe Drinking Water Act records list no violations for this system.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
110,000
Service connections
34,956
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Town of Hempstead Water Department compare with other water systems in Nassau County?
By EPA's size categories, Town of Hempstead Water Department is a very large system (more than 100,000 people). Nassau County has 44 active public water systems, and Town of Hempstead Water Department is the 4th-largest of them by population served. Its population served is about 3.5 times the county average of 31,534 people per system, and accounts for 7.9% of the 1,387,479 people reported by systems filed under the county. Across New York, the 8,167 active systems average 2,374 people each. Nationally, the average active community water system reports serving 6,703 people, so Town of Hempstead Water Department is about 16 times that figure.
What does “community water system” mean?
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. New York has 2,281 active community water systems, 28% of the state's 8,167 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 7,096 New York systems (87%) list groundwater as their primary source.
Who owns and regulates Town of Hempstead Water Department?
EPA lists Town of Hempstead Water Department as owned by a local government. The NY state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 21 of the 44 active systems in Nassau County (48%) are also owned by a local government.
Does Town of Hempstead Water Department have drinking water violations?
No SDWA violations on record.
EPA's SDWA violation and enforcement data (via EPA ECHO, updated quarterly) lists no violations for Town of Hempstead Water Department. For the latest compliance status, check EPA ECHO for current compliance history.
Town of Hempstead Water Department: frequently asked questions
Who runs Town of Hempstead Water Department?
Town of Hempstead Water Department (PWSID NY2900000) is a community water system owned by a local government. It is regulated by the NY state drinking water program.
How many people does Town of Hempstead Water Department serve?
Town of Hempstead Water Department reports serving 110,000 people through 34,956 service connections in Nassau County, New York.
Where does Town of Hempstead Water Department get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Town of Hempstead Water Department have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Town of Hempstead Water Department's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. EPA's Safe Drinking Water Act records list no violations for this system. For current results, consult the system's annual water quality report, EPA ECHO, or the NY state drinking water program.
Where can I find Town of Hempstead Water Department's water quality report?
As a community water system, Town of Hempstead Water Department must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Nassau County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Liberty Utilities New York - Lynbrook | Nassau | 220,000 | Community | Groundwater |
| Liberty Utilities New York - Merrick | Nassau | 135,000 | Community | Groundwater |
| Wa of Western Nassau | Nassau | 120,000 | Community | Groundwater |
| Jericho Wd | Nassau | 58,000 | Community | Groundwater |
| Hempstead (V) | Nassau | 56,000 | Community | Groundwater |
| Hicksville Wd | Nassau | 48,000 | Community | Groundwater |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Town of Hempstead Water Department, PWSID NY2900000, New York”, https://aquacensus.com/water-systems/new-york/town-of-hempstead-water-department-ny2900000 (data as of October 1, 2026).