Public water system · CA4910022
ActiveCanon Manor Water System
At a glance
Canon Manor Water System (PWSID CA4910022) is an active community water system in Sonoma County, California. It reports serving 805 people through 245 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list one violation for this system; it is health-based, and the most recent began in October 1995.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
805
Service connections
245
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Canon Manor Water System compare with other water systems in Sonoma County?
By EPA's size categories, Canon Manor Water System is a small system (501 to 3,300 people). Sonoma County has 441 active public water systems. Its population served is about 26% below the county average of 1,092 people per system, and accounts for 0.2% of the 481,435 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 Canon Manor Water System 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. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 6,179 California systems (83%) list groundwater as their primary source.
Who owns and regulates Canon Manor Water System?
EPA lists Canon Manor Water System as privately owned. 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. 371 of the 441 active systems in Sonoma County (84%) are also privately owned.
Does Canon Manor Water System have drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in October 1995. By type: 1 contaminant level above the legal limit. The contaminant or rule involved is Total coliform bacteria (TCR). 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 |
|---|---|---|---|---|
| 1995-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | 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.
Canon Manor Water System: frequently asked questions
Who runs Canon Manor Water System?
Canon Manor Water System (PWSID CA4910022) is a community water system privately owned. It is regulated by the CA state drinking water program.
How many people does Canon Manor Water System serve?
Canon Manor Water System reports serving 805 people through 245 service connections in Sonoma County, California.
Where does Canon Manor Water System 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 Canon Manor Water System have any drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in October 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 Canon Manor Water System'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 October 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 Canon Manor Water System's water quality report?
As a community water system, Canon Manor Water System 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 Sonoma County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Santa Rosa, City of | Sonoma | 175,396 | Community | Groundwater |
| Petaluma, City of | Sonoma | 60,781 | Community | Groundwater |
| Rohnert Park, City of | Sonoma | 43,821 | Community | Groundwater |
| Windsor, Town of | Sonoma | 25,561 | Community | Groundwater |
| Valley of the Moon Water District | Sonoma | 23,107 | Community | Groundwater |
| Sonoma, City of | Sonoma | 11,725 | 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, “Canon Manor Water System, PWSID CA4910022, California”, https://aquacensus.com/water-systems/california/canon-manor-water-system-ca4910022 (data as of October 1, 2026).