Public water system · CA4910024
ActiveCalifornia-American Geyserville (Puc)
At a glance
California-American Geyserville (Puc) (PWSID CA4910024) is an active community water system in Sonoma County, California. It reports serving 1,046 people through 317 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 not health-based, and the most recent began in August 1987.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,046
Service connections
317
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does California-American Geyserville (Puc) compare with other water systems in Sonoma County?
By EPA's size categories, California-American Geyserville (Puc) is a small system (501 to 3,300 people). Sonoma County has 441 active public water systems. Its population served is roughly in line with 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 California-American Geyserville (Puc) 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 California-American Geyserville (Puc)?
EPA lists California-American Geyserville (Puc) 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 California-American Geyserville (Puc) have drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in August 1987. By type: 1 public notice, recordkeeping or other. EPA lists 1 as archived. 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 |
|---|---|---|---|---|
| 1987-08-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
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.
California-American Geyserville (Puc): frequently asked questions
Who runs California-American Geyserville (Puc)?
California-American Geyserville (Puc) (PWSID CA4910024) is a community water system privately owned. It is regulated by the CA state drinking water program.
How many people does California-American Geyserville (Puc) serve?
California-American Geyserville (Puc) reports serving 1,046 people through 317 service connections in Sonoma County, California.
Where does California-American Geyserville (Puc) 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 California-American Geyserville (Puc) have any drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in August 1987. 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 California-American Geyserville (Puc)'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 not health-based, and the most recent began in August 1987. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find California-American Geyserville (Puc)'s water quality report?
As a community water system, California-American Geyserville (Puc) 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, “California-American Geyserville (Puc), PWSID CA4910024, California”, https://aquacensus.com/water-systems/california/california-american-geyserville-puc-ca4910024 (data as of October 1, 2026).