Public water system · NY3401150
ActiveCanandaigua City
At a glance
Canandaigua City (PWSID NY3401150) is an active community water system in Ontario County, New York. It reports serving 11,264 people through 4,232 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
11,264
Service connections
4,232
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Canandaigua City compare with other water systems in Ontario County?
By EPA's size categories, Canandaigua City is a large system (10,001 to 100,000 people). Ontario County has 53 active public water systems, and Canandaigua City is the 3rd-largest of them by population served. Its population served is about 6.4 times the county average of 1,756 people per system, and accounts for 12% of the 93,056 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 Canandaigua City is about 68% above 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. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 296 New York systems (3.6%) list surface water as their primary source.
Who owns and regulates Canandaigua City?
EPA lists Canandaigua City 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. 27 of the 53 active systems in Ontario County (51%) are also owned by a local government.
Does Canandaigua City have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2024. The violations listed here began between March 2016 and July 2024. By type: 12 monitoring and reporting. The contaminants or rules involved are Carbon, total, Endrin, Benzo(a)pyrene and Hexachlorocyclopentadiene. 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 |
|---|---|---|---|---|
| 2024-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Carbon, totalcode 2920 | No | Archived |
| 2016-03-01 | Monitoring and reportingMonitoring, Regular · code 03 | Endrincode 2005 | No | Resolved |
| 2016-03-01 | Monitoring and reportingMonitoring, Regular · code 03 | Benzo(a)pyrenecode 2306 | No | Resolved |
| 2016-03-01 | Monitoring and reportingMonitoring, Regular · code 03 | Hexachlorocyclopentadienecode 2042 | No | Resolved |
| 2016-03-01 | Monitoring and reportingMonitoring, Regular · code 03 | 2,4-Dcode 2105 | No | Resolved |
| 2016-03-01 | Monitoring and reportingMonitoring, Regular · code 03 | 2,4,5-TP (Silvex)code 2110 | No | Resolved |
| 2016-03-01 | Monitoring and reportingMonitoring, Regular · code 03 | Dinosebcode 2041 | No | Resolved |
| 2016-03-01 | Monitoring and reportingMonitoring, Regular · code 03 | Aldicarb sulfonecode 2044 | No | Resolved |
| 2016-03-01 | Monitoring and reportingMonitoring, Regular · code 03 | Aldicarbcode 2047 | No | Resolved |
| 2016-03-01 | Monitoring and reportingMonitoring, Regular · code 03 | Atrazinecode 2050 | No | Resolved |
| 2016-03-01 | Monitoring and reportingMonitoring, Regular · code 03 | Alachlor (Lasso)code 2051 | No | Resolved |
| 2016-03-01 | Monitoring and reportingMonitoring, Regular · code 03 | Oxamylcode 2036 | 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.
Canandaigua City: frequently asked questions
Who runs Canandaigua City?
Canandaigua City (PWSID NY3401150) is a community water system owned by a local government. It is regulated by the NY state drinking water program.
How many people does Canandaigua City serve?
Canandaigua City reports serving 11,264 people through 4,232 service connections in Ontario County, New York.
Where does Canandaigua City get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Canandaigua City 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 July 2024. 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 Canandaigua City'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 July 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the NY state drinking water program.
Where can I find Canandaigua City's water quality report?
As a community water system, Canandaigua City 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 Ontario County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Geneva City | Ontario | 13,334 | Community | Surface water |
| Canandaigua-Farmington Consolidated W.D. | Ontario | 13,000 | Community | Purchased surface water |
| Mcwa - Geneva | Ontario | 8,532 | Community | Purchased surface water |
| Canandaigua Town Cons. Wd | Ontario | 6,800 | Community | Purchased surface water |
| Hopewell Cons Wd 1 | Ontario | 3,781 | Community | Purchased surface water |
| Gorham Town Wd | Ontario | 3,420 | Community | Surface water |
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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, “Canandaigua City, PWSID NY3401150, New York”, https://aquacensus.com/water-systems/new-york/canandaigua-city-ny3401150 (data as of October 1, 2026).