Public water system · CA1910205
ActiveSuburban Water Systems-San Jose
At a glance
Suburban Water Systems-San Jose (PWSID CA1910205) is an active community water system in Los Angeles County, California. It reports serving 168,843 people through 40,299 service connections. Its primary water source is purchased surface water, and EPA lists it as privately owned. EPA's records list 3 violations for this system; 2 are health-based, and the most recent began in April 2022.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
168,843
Service connections
40,299
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Suburban Water Systems-San Jose compare with other water systems in Los Angeles County?
By EPA's size categories, Suburban Water Systems-San Jose is a very large system (more than 100,000 people). Los Angeles County has 275 active public water systems. Its population served is about 4.6 times the county average of 36,762 people per system, and accounts for 1.7% of the 10,109,668 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 Suburban Water Systems-San Jose is about 25 times 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 Suburban Water Systems-San Jose?
EPA lists Suburban Water Systems-San Jose 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. 150 of the 275 active systems in Los Angeles County (55%) are also privately owned.
Does Suburban Water Systems-San Jose have drinking water violations?
EPA's records list 3 violations for this system; 2 are health-based, and the most recent began in April 2022. The violations listed here began between December 1992 and April 2022. By type: 1 monitoring, 1 required treatment not met and 1 contaminant level above the legal limit. The contaminants or rules involved are Revised Total Coliform Rule, Surface Water Treatment Rule and Total coliform bacteria (TCR). EPA lists 3 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 |
|---|---|---|---|---|
| 2022-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 1993-06-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
| 1992-12-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | 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.
Suburban Water Systems-San Jose: frequently asked questions
Who runs Suburban Water Systems-San Jose?
Suburban Water Systems-San Jose (PWSID CA1910205) is a community water system privately owned. It is regulated by the CA state drinking water program.
How many people does Suburban Water Systems-San Jose serve?
Suburban Water Systems-San Jose reports serving 168,843 people through 40,299 service connections in Los Angeles County, California.
Where does Suburban Water Systems-San Jose 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 Suburban Water Systems-San Jose have any drinking water violations?
EPA's records list 3 violations for this system; 2 are health-based, and the most recent began in April 2022. 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 Suburban Water Systems-San Jose'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; 2 are health-based, and the most recent began in April 2022. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find Suburban Water Systems-San Jose's water quality report?
As a community water system, Suburban Water Systems-San Jose 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 Los Angeles County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Los Angeles-City, Dept. of Water & Power | Los Angeles | 3,875,566 | Community | Surface water |
| Long Beach Utilities Department | Los Angeles | 466,772 | Community | Purchased surface water |
| Santa Clarita Valley Water Agency | Los Angeles | 294,090 | Community | Surface water |
| Gswc - Southwest | Los Angeles | 277,740 | Community | Purchased surface water |
| San Gabriel Valley Water Co.-El Monte | Los Angeles | 248,000 | Community | Groundwater |
| Los Angeles Cwwd 40 Reg 4 & 34 Lancaster | Los Angeles | 208,129 | 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, “Suburban Water Systems-San Jose, PWSID CA1910205, California”, https://aquacensus.com/water-systems/california/suburban-water-systems-san-jose-ca1910205 (data as of October 1, 2026).