Public water system · NY2902848
ActiveRockville Centre (V)
At a glance
Rockville Centre (V) (PWSID NY2902848) is an active community water system in Nassau County, New York. It reports serving 24,700 people through 6,867 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, 3 are health-based, and the most recent began in January 2014.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
24,700
Service connections
6,867
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Rockville Centre (V) compare with other water systems in Nassau County?
By EPA's size categories, Rockville Centre (V) is a large system (10,001 to 100,000 people). Nassau County has 44 active public water systems. Its population served is about 22% below the county average of 31,534 people per system, and accounts for 1.8% 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 Rockville Centre (V) is about 3.7 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 Rockville Centre (V)?
EPA lists Rockville Centre (V) 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 Rockville Centre (V) have drinking water violations?
Of the 12 most recent violations in EPA's records, 3 are health-based, and the most recent began in January 2014. The violations listed here began between January 1998 and January 2014. By type: 9 monitoring and reporting and 3 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 7 as resolved and 5 as archived. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Archived |
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitrate-Nitritecode 1038 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitrate-Nitritecode 1038 | No | Archived |
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Archived |
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
| 2013-10-01 | Monitoring and reportingMonitoring, Routine (IDSE) · code 30 | Total trihalomethanes (TTHM)code 2950 | No | Archived |
| 2013-10-01 | Monitoring and reportingMonitoring, Routine (IDSE) · code 30 | Haloacetic acids (HAA5)code 2456 | No | Archived |
| 2002-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2001-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1998-02-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1998-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Resolved |
The 12 most recent violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Rockville Centre (V): frequently asked questions
Who runs Rockville Centre (V)?
Rockville Centre (V) (PWSID NY2902848) is a community water system owned by a local government. It is regulated by the NY state drinking water program.
How many people does Rockville Centre (V) serve?
Rockville Centre (V) reports serving 24,700 people through 6,867 service connections in Nassau County, New York.
Where does Rockville Centre (V) 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 Rockville Centre (V) have any drinking water violations?
Of the 12 most recent violations in EPA's records, 3 are health-based, and the most recent began in January 2014. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Rockville Centre (V)'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. Of the 12 most recent violations in EPA's records, 3 are health-based, and the most recent began in January 2014. For current results, consult the system's annual water quality report, EPA ECHO, or the NY state drinking water program.
Where can I find Rockville Centre (V)'s water quality report?
As a community water system, Rockville Centre (V) 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 |
| Town of Hempstead Water Department | Nassau | 110,000 | Community | Groundwater |
| Jericho Wd | Nassau | 58,000 | Community | Groundwater |
| Hempstead (V) | Nassau | 56,000 | 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, “Rockville Centre (V), PWSID NY2902848, New York”, https://aquacensus.com/water-systems/new-york/rockville-centre-v-ny2902848 (data as of October 1, 2026).