Public water system · CA3110024
ActivePlacer Cwa - Alta
At a glance
Placer Cwa - Alta (PWSID CA3110024) is an active community water system in Placer County, California. It reports serving 748 people through 270 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in November 2005.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
748
Service connections
270
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Placer Cwa - Alta compare with other water systems in Placer County?
By EPA's size categories, Placer Cwa - Alta is a small system (501 to 3,300 people). Placer County has 116 active public water systems. Its population served is well below the county average of 3,692 people per system, and accounts for 0.2% of the 428,242 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 Placer Cwa - Alta 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. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 609 California systems (8.1%) list surface water as their primary source.
Who owns and regulates Placer Cwa - Alta?
EPA lists Placer Cwa - Alta as owned by a local government. 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. 35 of the 116 active systems in Placer County (30%) are also owned by a local government.
Does Placer Cwa - Alta have drinking water violations?
EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in November 2005. The violations listed here began between June 1993 and November 2005. By type: 1 monitoring and reporting and 1 required treatment not met. The contaminants or rules involved are Interim Enhanced Surface Water Treatment Rule and Surface Water Treatment Rule. EPA lists 2 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 |
|---|---|---|---|---|
| 2005-11-01 | Monitoring and reportingMonitoring, Turbidity (Enhanced SWTR) · code 38 | Interim Enhanced Surface Water Treatment Rulecode 0300 | No | Resolved |
| 1993-06-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
All 2 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.
Placer Cwa - Alta: frequently asked questions
Who runs Placer Cwa - Alta?
Placer Cwa - Alta (PWSID CA3110024) is a community water system owned by a local government. It is regulated by the CA state drinking water program.
How many people does Placer Cwa - Alta serve?
Placer Cwa - Alta reports serving 748 people through 270 service connections in Placer County, California.
Where does Placer Cwa - Alta get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Placer Cwa - Alta have any drinking water violations?
EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in November 2005. 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 Placer Cwa - Alta'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 2 violations for this system; 1 is health-based, and the most recent began in November 2005. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find Placer Cwa - Alta's water quality report?
As a community water system, Placer Cwa - Alta 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 Placer County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of Roseville | Placer | 155,612 | Community | Surface water |
| Placer Cwa - Foothill | Placer | 89,544 | Community | Surface water |
| City of Lincoln | Placer | 54,538 | Community | Purchased surface water |
| Placer Cwa - Auburn/Bowman | Placer | 27,294 | Community | Surface water |
| Northstar C.S.D. | Placer | 15,452 | Community | Surface water |
| Cal Am - West Placer | Placer | 8,861 | 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, “Placer Cwa - Alta, PWSID CA3110024, California”, https://aquacensus.com/water-systems/california/placer-cwa-alta-ca3110024 (data as of October 1, 2026).