Public water system · CA3400155
ActiveSequoia Water Assoc
At a glance
Sequoia Water Assoc (PWSID CA3400155) is an active community water system in Sacramento County, California. It reports serving 54 people through 18 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 3 violations for this system; none is health-based, and the most recent began in October 2018.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
54
Service connections
18
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Sequoia Water Assoc compare with other water systems in Sacramento County?
By EPA's size categories, Sequoia Water Assoc is a very small system (500 people or fewer). 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 Sequoia Water Assoc 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 Sequoia Water Assoc?
EPA lists Sequoia Water Assoc 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 Sequoia Water Assoc have drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in October 2018. The violations listed here began between August 2005 and October 2018. By type: 2 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminants or rules involved are Consumer Confidence Rule, Lead and Copper Rule and Nitrite. EPA lists 2 as addressed and 1 as resolved. Addressed means the violation is not resolved or archived and is covered by formal enforcement. 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 |
|---|---|---|---|---|
| 2018-10-02 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Addressed |
| 2018-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Addressed |
| 2005-08-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
All 3 violations in EPA's records, newest first.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.
Sequoia Water Assoc: frequently asked questions
Who runs Sequoia Water Assoc?
Sequoia Water Assoc (PWSID CA3400155) is a community water system privately owned. It is regulated by the CA state drinking water program.
How many people does Sequoia Water Assoc serve?
Sequoia Water Assoc reports serving 54 people through 18 service connections in Sacramento County, California.
Where does Sequoia Water Assoc 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 Sequoia Water Assoc have any drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in October 2018. 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 Sequoia Water Assoc'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 3 violations for this system; none is health-based, and the most recent began in October 2018. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find Sequoia Water Assoc's water quality report?
As a community water system, Sequoia Water Assoc 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, “Sequoia Water Assoc, PWSID CA3400155, California”, https://aquacensus.com/water-systems/california/sequoia-water-assoc-ca3400155 (data as of October 1, 2026).