Public water system · CA1910443
ActiveLos Angeles, City of - Castaic Pwr Plant
At a glance
Los Angeles, City of - Castaic Pwr Plant (PWSID CA1910443) is an active non-transient non-community water system in Los Angeles County, California. It reports serving 65 people through 7 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
65
Service connections
7
Primary source
SW
Surface water
System type
NTNCWS
Non-transient non-community water system
System record
How does Los Angeles, City of - Castaic Pwr Plant compare with other water systems in Los Angeles County?
By EPA's size categories, Los Angeles, City of - Castaic Pwr Plant is a very small system (500 people or fewer). Los Angeles County has 275 active public water systems. Its population served is well below the county average of 36,762 people per system, and accounts for less than 0.1% 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 non-transient non-community water system reports serving 430 people, so Los Angeles, City of - Castaic Pwr Plant is well below that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. California has 1,466 active non-transient non-community water systems, 20% 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 Los Angeles, City of - Castaic Pwr Plant?
EPA lists Los Angeles, City of - Castaic Pwr Plant 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 Los Angeles, City of - Castaic Pwr Plant 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 Los Angeles, City of - Castaic Pwr Plant. For the latest compliance status, check EPA ECHO for current compliance history.
Los Angeles, City of - Castaic Pwr Plant: frequently asked questions
Who runs Los Angeles, City of - Castaic Pwr Plant?
Los Angeles, City of - Castaic Pwr Plant (PWSID CA1910443) is a non-transient non-community water system owned by a local government. It is regulated by the CA state drinking water program.
How many people does Los Angeles, City of - Castaic Pwr Plant serve?
Los Angeles, City of - Castaic Pwr Plant reports serving 65 people through 7 service connections in Los Angeles County, California.
Where does Los Angeles, City of - Castaic Pwr Plant 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 Los Angeles, City of - Castaic Pwr Plant have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Los Angeles, City of - Castaic Pwr Plant'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 EPA ECHO, or the CA state drinking water program.
Where can I find Los Angeles, City of - Castaic Pwr Plant's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Los Angeles, City of - Castaic Pwr Plant is a non-transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
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, “Los Angeles, City of - Castaic Pwr Plant, PWSID CA1910443, California”, https://aquacensus.com/water-systems/california/los-angeles-city-of-castaic-pwr-plant-ca1910443 (data as of October 1, 2026).