Public water system · CA4901368
ActiveGraton Commerce Center
At a glance
Graton Commerce Center (PWSID CA4901368) is an active non-transient non-community water system in Sonoma County, California. It reports serving 60 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's Safe Drinking Water Act records list no violations for this system.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
60
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Graton Commerce Center compare with other water systems in Sonoma County?
By EPA's size categories, Graton Commerce Center is a very small system (500 people or fewer). Sonoma County has 441 active public water systems. Its population served is well below the county average of 1,092 people per system, and accounts for less than 0.1% 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 non-transient non-community water system reports serving 430 people, so Graton Commerce Center is well below that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. California has 1,466 active non-transient non-community water systems, 20% 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 Graton Commerce Center?
EPA lists Graton Commerce Center 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 Graton Commerce Center have drinking water violations?
No SDWA violations on record.
EPA's SDWA violation and enforcement data (via EPA ECHO, updated quarterly) lists no violations for Graton Commerce Center. For the latest compliance status, check EPA ECHO for current compliance history.
Graton Commerce Center: frequently asked questions
Who runs Graton Commerce Center?
Graton Commerce Center (PWSID CA4901368) is a non-transient non-community water system privately owned. It is regulated by the CA state drinking water program.
How many people does Graton Commerce Center serve?
Graton Commerce Center reports serving 60 people through 1 service connection in Sonoma County, California.
Where does Graton Commerce Center 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 Graton Commerce Center have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Graton Commerce Center'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 Safe Drinking Water Act records list no violations for this system. For current results, consult EPA ECHO, or the CA state drinking water program.
Where can I find Graton Commerce Center's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Graton Commerce Center is a non-transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
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, “Graton Commerce Center, PWSID CA4901368, California”, https://aquacensus.com/water-systems/california/graton-commerce-center-ca4901368 (data as of October 1, 2026).