Public water system · CA3410047
ActiveCal Am - Walnut Grove
At a glance
Cal Am - Walnut Grove (PWSID CA3410047) is an active community water system in Sacramento County, California. It reports serving 667 people through 202 service connections. 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
667
Service connections
202
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Cal Am - Walnut Grove compare with other water systems in Sacramento County?
By EPA's size categories, Cal Am - Walnut Grove is a small system (501 to 3,300 people). Sacramento County has 164 active public water systems. Its population served is well below the county average of 10,325 people per system, and accounts for less than 0.1% of the 1,693,284 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 Cal Am - Walnut Grove 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 Cal Am - Walnut Grove?
EPA lists Cal Am - Walnut Grove 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. 115 of the 164 active systems in Sacramento County (70%) are also privately owned.
Does Cal Am - Walnut Grove 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 Cal Am - Walnut Grove. For the latest compliance status, check EPA ECHO for current compliance history.
Cal Am - Walnut Grove: frequently asked questions
Who runs Cal Am - Walnut Grove?
Cal Am - Walnut Grove (PWSID CA3410047) is a community water system privately owned. It is regulated by the CA state drinking water program.
How many people does Cal Am - Walnut Grove serve?
Cal Am - Walnut Grove reports serving 667 people through 202 service connections in Sacramento County, California.
Where does Cal Am - Walnut Grove 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 Cal Am - Walnut Grove have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Cal Am - Walnut Grove'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 the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find Cal Am - Walnut Grove's water quality report?
As a community water system, Cal Am - Walnut Grove 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 Sacramento County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of Sacramento Main | Sacramento | 527,979 | Community | Surface water |
| Sacramento Suburban Water District | Sacramento | 194,444 | Community | Purchased surface water |
| Scwa - Laguna/Vineyard | Sacramento | 184,896 | Community | Surface water |
| Folsom, City of - Main | Sacramento | 80,969 | Community | Surface water |
| Citrus Heights Water District | Sacramento | 67,818 | Community | Purchased surface water |
| Cal Am - Suburban Rosemont | Sacramento | 54,793 | 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, “Cal Am - Walnut Grove, PWSID CA3410047, California”, https://aquacensus.com/water-systems/california/cal-am-walnut-grove-ca3410047 (data as of October 1, 2026).