Public water system · CA3110006
ActivePlacer Cwa - Colfax
At a glance
Placer Cwa - Colfax (PWSID CA3110006) is an active community water system in Placer County, California. It reports serving 3,149 people through 955 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. EPA's Safe Drinking Water Act records list no violations for this system.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
3,149
Service connections
955
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Placer Cwa - Colfax compare with other water systems in Placer County?
By EPA's size categories, Placer Cwa - Colfax is a small system (501 to 3,300 people). Placer County has 116 active public water systems. Its population served is about 15% below the county average of 3,692 people per system, and accounts for 0.7% 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 - Colfax is about half of 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 - Colfax?
EPA lists Placer Cwa - Colfax 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 - Colfax 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 Placer Cwa - Colfax. For the latest compliance status, check EPA ECHO for current compliance history.
Placer Cwa - Colfax: frequently asked questions
Who runs Placer Cwa - Colfax?
Placer Cwa - Colfax (PWSID CA3110006) 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 - Colfax serve?
Placer Cwa - Colfax reports serving 3,149 people through 955 service connections in Placer County, California.
Where does Placer Cwa - Colfax 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 - Colfax have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Placer Cwa - Colfax'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 Placer Cwa - Colfax's water quality report?
As a community water system, Placer Cwa - Colfax 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 - Colfax, PWSID CA3110006, California”, https://aquacensus.com/water-systems/california/placer-cwa-colfax-ca3110006 (data as of October 1, 2026).