Public water system · CA1910146
ActiveSanta Monica-City, Water Division
At a glance
Santa Monica-City, Water Division (PWSID CA1910146) is an active community water system in Los Angeles County, California. It reports serving 89,947 people through 16,884 service connections. Its primary water source is purchased 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
89,947
Service connections
16,884
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Santa Monica-City, Water Division compare with other water systems in Los Angeles County?
By EPA's size categories, Santa Monica-City, Water Division is a large system (10,001 to 100,000 people). Los Angeles County has 275 active public water systems. Its population served is about 145% above the county average of 36,762 people per system, and accounts for 0.9% 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 Santa Monica-City, Water Division is about 13 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 Santa Monica-City, Water Division?
EPA lists Santa Monica-City, Water Division 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. 100 of the 275 active systems in Los Angeles County (36%) are also owned by a local government.
Does Santa Monica-City, Water Division 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 Santa Monica-City, Water Division. For the latest compliance status, check EPA ECHO for current compliance history.
Santa Monica-City, Water Division: frequently asked questions
Who runs Santa Monica-City, Water Division?
Santa Monica-City, Water Division (PWSID CA1910146) is a community water system owned by a local government. It is regulated by the CA state drinking water program.
How many people does Santa Monica-City, Water Division serve?
Santa Monica-City, Water Division reports serving 89,947 people through 16,884 service connections in Los Angeles County, California.
Where does Santa Monica-City, Water Division 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 Santa Monica-City, Water Division have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Santa Monica-City, Water Division'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 Santa Monica-City, Water Division's water quality report?
As a community water system, Santa Monica-City, Water Division 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 |
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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, “Santa Monica-City, Water Division, PWSID CA1910146, California”, https://aquacensus.com/water-systems/california/santa-monica-city-water-division-ca1910146 (data as of October 1, 2026).