Public water system · NY2916010
ActiveSeawanhaka Yacht Club
At a glance
Seawanhaka Yacht Club (PWSID NY2916010) is an active transient non-community water system in Nassau County, New York. It reports serving 60 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as under public/private ownership. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in September 2012.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
60
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Seawanhaka Yacht Club compare with other water systems in Nassau County?
By EPA's size categories, Seawanhaka Yacht Club is a very small system (500 people or fewer). Nassau County has 44 active public water systems. Its population served is well below the county average of 31,534 people per system, and accounts for less than 0.1% 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 transient non-community water system reports serving 144 people, so Seawanhaka Yacht Club is about 58% below that figure.
What does “transient non-community water system” mean?
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. New York has 5,182 active transient non-community water systems, 63% 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 Seawanhaka Yacht Club?
EPA lists Seawanhaka Yacht Club as under public/private ownership. 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. 16 of the 44 active systems in Nassau County (36%) are also under public/private ownership.
Does Seawanhaka Yacht Club have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in September 2012. The violations listed here began between May 2011 and September 2012. By type: 12 public notice, recordkeeping or other. EPA lists 11 as resolved and 1 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 |
|---|---|---|---|---|
| 2012-09-01 | Public notice, recordkeeping or otherOperations Report · code 10 | Not reported | No | Resolved |
| 2012-08-01 | Public notice, recordkeeping or otherOperations Report · code 10 | Not reported | No | Resolved |
| 2012-07-01 | Public notice, recordkeeping or otherOperations Report · code 10 | Not reported | No | Resolved |
| 2012-05-01 | Public notice, recordkeeping or otherOperations Report · code 10 | Not reported | No | Resolved |
| 2012-04-01 | Public notice, recordkeeping or otherOperations Report · code 10 | Not reported | No | Resolved |
| 2012-03-01 | Public notice, recordkeeping or otherOperations Report · code 10 | Not reported | No | Resolved |
| 2011-10-01 | Public notice, recordkeeping or otherOperations Report · code 10 | Not reported | No | Archived |
| 2011-09-01 | Public notice, recordkeeping or otherOperations Report · code 10 | Not reported | No | Resolved |
| 2011-08-01 | Public notice, recordkeeping or otherOperations Report · code 10 | Not reported | No | Resolved |
| 2011-07-01 | Public notice, recordkeeping or otherOperations Report · code 10 | Not reported | No | Resolved |
| 2011-06-01 | Public notice, recordkeeping or otherOperations Report · code 10 | Not reported | No | Resolved |
| 2011-05-01 | Public notice, recordkeeping or otherOperations Report · code 10 | Not reported | 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.
Seawanhaka Yacht Club: frequently asked questions
Who runs Seawanhaka Yacht Club?
Seawanhaka Yacht Club (PWSID NY2916010) is a transient non-community water system under public/private ownership. It is regulated by the NY state drinking water program.
How many people does Seawanhaka Yacht Club serve?
Seawanhaka Yacht Club reports serving 60 people through 1 service connection in Nassau County, New York.
Where does Seawanhaka Yacht Club 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 Seawanhaka Yacht Club have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in September 2012. 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 Seawanhaka Yacht Club'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, none is health-based, and the most recent began in September 2012. For current results, consult EPA ECHO, or the NY state drinking water program.
Where can I find Seawanhaka Yacht Club's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Seawanhaka Yacht Club is a transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
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, “Seawanhaka Yacht Club, PWSID NY2916010, New York”, https://aquacensus.com/water-systems/new-york/seawanhaka-yacht-club-ny2916010 (data as of October 1, 2026).