Public water system · CA0110012
ActiveTown of Sunol - Sfpuc
At a glance
Town of Sunol - Sfpuc (PWSID CA0110012) is an active community water system in Alameda County, California. It reports serving 281 people through 102 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list one violation for this system; it is health-based, and the most recent began in September 1995.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
281
Service connections
102
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Town of Sunol - Sfpuc compare with other water systems in Alameda County?
By EPA's size categories, Town of Sunol - Sfpuc is a very small system (500 people or fewer). Alameda County has 27 active public water systems. Its population served is well below the county average of 83,320 people per system, and accounts for less than 0.1% of the 2,249,634 people reported by systems filed under the county. Across California, the 7,479 active systems average 5,706 people each. Nationally, the average active community water system reports serving 6,703 people, so Town of Sunol - Sfpuc 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. California has 2,997 active community water systems, 40% of the state's 7,479 active systems. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 506 California systems (6.8%) list purchased surface water as their primary source.
Who owns and regulates Town of Sunol - Sfpuc?
EPA lists Town of Sunol - Sfpuc as owned by a local government. The CA state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 15 of the 27 active systems in Alameda County (56%) are also owned by a local government.
Does Town of Sunol - Sfpuc have drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in September 1995. By type: 1 required treatment not met. The contaminant or rule involved is Surface Water Treatment Rule. EPA lists 1 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 |
|---|---|---|---|---|
| 1995-09-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
The one violation in EPA's records.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.
Town of Sunol - Sfpuc: frequently asked questions
Who runs Town of Sunol - Sfpuc?
Town of Sunol - Sfpuc (PWSID CA0110012) is a community water system owned by a local government. It is regulated by the CA state drinking water program.
How many people does Town of Sunol - Sfpuc serve?
Town of Sunol - Sfpuc reports serving 281 people through 102 service connections in Alameda County, California.
Where does Town of Sunol - Sfpuc 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 Town of Sunol - Sfpuc have any drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in September 1995. 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 Town of Sunol - Sfpuc'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 one violation for this system; it is health-based, and the most recent began in September 1995. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find Town of Sunol - Sfpuc's water quality report?
As a community water system, Town of Sunol - Sfpuc 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 Alameda County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| East Bay MUD | Alameda | 1,442,800 | Community | Surface water |
| Alameda County Water District | Alameda | 344,000 | Community | Surface water |
| City of Hayward | Alameda | 162,954 | Community | Purchased surface water |
| Dublin San Ramon Services District | Alameda | 98,776 | Community | Purchased surface water |
| City of Pleasanton | Alameda | 76,689 | Community | Purchased surface water |
| California Water Service - Livermore | Alameda | 60,414 | Community | Purchased 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, “Town of Sunol - Sfpuc, PWSID CA0110012, California”, https://aquacensus.com/water-systems/california/town-of-sunol-sfpuc-ca0110012 (data as of October 1, 2026).