Public water system · CA4210024
ActiveLa Cumbre Mutual Water Co
At a glance
La Cumbre Mutual Water Co (PWSID CA4210024) is an active community water system in Santa Barbara County, California. It reports serving 4,861 people through 1,469 service connections. Its primary water source is purchased surface water, and EPA lists it as privately owned. EPA's records list 2 violations for this system; all are health-based, and the most recent began in October 2007.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
4,861
Service connections
1,469
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does La Cumbre Mutual Water Co compare with other water systems in Santa Barbara County?
By EPA's size categories, La Cumbre Mutual Water Co is a medium system (3,301 to 10,000 people). Santa Barbara County has 150 active public water systems. Its population served is about 49% above the county average of 3,255 people per system, and accounts for 1% of the 488,317 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 La Cumbre Mutual Water Co is about 27% 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. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 506 California systems (6.8%) list purchased surface water as their primary source.
Who owns and regulates La Cumbre Mutual Water Co?
EPA lists La Cumbre Mutual Water Co 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. 121 of the 150 active systems in Santa Barbara County (81%) are also privately owned.
Does La Cumbre Mutual Water Co have drinking water violations?
EPA's records list 2 violations for this system; all are health-based, and the most recent began in October 2007. The violations listed here began between April 1993 and October 2007. By type: 2 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). 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 |
|---|---|---|---|---|
| 2007-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1993-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | 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.
La Cumbre Mutual Water Co: frequently asked questions
Who runs La Cumbre Mutual Water Co?
La Cumbre Mutual Water Co (PWSID CA4210024) is a community water system privately owned. It is regulated by the CA state drinking water program.
How many people does La Cumbre Mutual Water Co serve?
La Cumbre Mutual Water Co reports serving 4,861 people through 1,469 service connections in Santa Barbara County, California.
Where does La Cumbre Mutual Water Co get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does La Cumbre Mutual Water Co have any drinking water violations?
EPA's records list 2 violations for this system; all are health-based, and the most recent began in October 2007. 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 La Cumbre Mutual Water Co'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; all are health-based, and the most recent began in October 2007. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find La Cumbre Mutual Water Co's water quality report?
As a community water system, La Cumbre Mutual Water Co 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 Santa Barbara County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of Santa Maria Utilities Department | Santa Barbara | 109,477 | Community | Purchased surface water |
| City of Santa Barbara Water Department | Santa Barbara | 99,323 | Community | Surface water |
| Goleta Water District | Santa Barbara | 84,462 | Community | Surface water |
| Lompoc-City Water Utility Div | Santa Barbara | 40,473 | Community | Surface water |
| Golden State Water Company - Orcutt | Santa Barbara | 34,102 | Community | Purchased surface water |
| Carpinteria Valley Water District | Santa Barbara | 15,996 | Community | Purchased surface water |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “La Cumbre Mutual Water Co, PWSID CA4210024, California”, https://aquacensus.com/water-systems/california/la-cumbre-mutual-water-co-ca4210024 (data as of October 1, 2026).