Public water system · NY4930009
ActiveCayuga Lake Water District # 3
At a glance
Cayuga Lake Water District # 3 (PWSID NY4930009) is an active community water system in Seneca County, New York. It reports serving 432 people through 173 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list 5 violations for this system; 1 is health-based, and the most recent began in June 2019.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
432
Service connections
173
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Cayuga Lake Water District # 3 compare with other water systems in Seneca County?
By EPA's size categories, Cayuga Lake Water District # 3 is a very small system (500 people or fewer). Seneca County has 87 active public water systems. Its population served is about 35% above the county average of 319 people per system, and accounts for 1.6% of the 27,760 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 Cayuga Lake Water District # 3 is well below 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. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 399 New York systems (4.9%) list purchased surface water as their primary source.
Who owns and regulates Cayuga Lake Water District # 3?
EPA lists Cayuga Lake Water District # 3 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. 24 of the 87 active systems in Seneca County (28%) are also owned by a local government.
Does Cayuga Lake Water District # 3 have drinking water violations?
EPA's records list 5 violations for this system; 1 is health-based, and the most recent began in June 2019. The violations listed here began between August 2008 and June 2019. By type: 2 monitoring and reporting, 1 monitoring, 1 public notice, recordkeeping or other and 1 contaminant level above the legal limit. The contaminants or rules involved are Revised Total Coliform Rule, Total trihalomethanes (TTHM), Haloacetic acids (HAA5) and Consumer Confidence Rule. EPA lists 5 as resolved. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2019-06-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2016-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2016-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2010-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2008-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 5 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.
Cayuga Lake Water District # 3: frequently asked questions
Who runs Cayuga Lake Water District # 3?
Cayuga Lake Water District # 3 (PWSID NY4930009) is a community water system owned by a local government. It is regulated by the NY state drinking water program.
How many people does Cayuga Lake Water District # 3 serve?
Cayuga Lake Water District # 3 reports serving 432 people through 173 service connections in Seneca County, New York.
Where does Cayuga Lake Water District # 3 get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Cayuga Lake Water District # 3 have any drinking water violations?
EPA's records list 5 violations for this system; 1 is health-based, and the most recent began in June 2019. 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 Cayuga Lake Water District # 3'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 records list 5 violations for this system; 1 is health-based, and the most recent began in June 2019. For current results, consult the system's annual water quality report, EPA ECHO, or the NY state drinking water program.
Where can I find Cayuga Lake Water District # 3's water quality report?
As a community water system, Cayuga Lake Water District # 3 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 Seneca County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Seneca Falls | Seneca | 9,400 | Community | Surface water |
| Waterloo Village | Seneca | 7,000 | Community | Surface water |
| Seneca County Water District #1 | Seneca | 1,820 | Community | Purchased surface water |
| Border City Water District | Seneca | 1,600 | Community | Purchased surface water |
| Ovid Village | Seneca | 990 | Community | Surface water |
| Interlaken Village | Seneca | 650 | 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, “Cayuga Lake Water District # 3, PWSID NY4930009, New York”, https://aquacensus.com/water-systems/new-york/cayuga-lake-water-district-3-ny4930009 (data as of October 1, 2026).