Public water system · CA1900555
ActiveLos Angeles, City of - Power Plant #1
At a glance
Los Angeles, City of - Power Plant #1 (PWSID CA1900555) is an active community water system in Los Angeles County, California. It reports serving 29 people through 19 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. EPA's records list 6 violations for this system; 5 are health-based, and the most recent began in February 1998.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
29
Service connections
19
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Los Angeles, City of - Power Plant #1 compare with other water systems in Los Angeles County?
By EPA's size categories, Los Angeles, City of - Power Plant #1 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 community water system reports serving 6,703 people, so Los Angeles, City of - Power Plant #1 is well 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. 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 - Power Plant #1?
EPA lists Los Angeles, City of - Power Plant #1 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 - Power Plant #1 have drinking water violations?
EPA's records list 6 violations for this system; 5 are health-based, and the most recent began in February 1998. The violations listed here began between January 1992 and February 1998. By type: 3 required treatment not met, 2 contaminant level above the legal limit and 1 monitoring and reporting. The contaminant or rule involved most often is Surface Water Treatment Rule (3 of them). EPA lists 6 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 |
|---|---|---|---|---|
| 1998-02-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
| 1994-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1994-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1993-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1993-07-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
| 1992-01-01 | Required treatment not metFailure to Filter (SWTR) · code 42 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
All 6 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.
Los Angeles, City of - Power Plant #1: frequently asked questions
Who runs Los Angeles, City of - Power Plant #1?
Los Angeles, City of - Power Plant #1 (PWSID CA1900555) is a 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 - Power Plant #1 serve?
Los Angeles, City of - Power Plant #1 reports serving 29 people through 19 service connections in Los Angeles County, California.
Where does Los Angeles, City of - Power Plant #1 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 - Power Plant #1 have any drinking water violations?
EPA's records list 6 violations for this system; 5 are health-based, and the most recent began in February 1998. 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 Los Angeles, City of - Power Plant #1'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 6 violations for this system; 5 are health-based, and the most recent began in February 1998. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find Los Angeles, City of - Power Plant #1's water quality report?
As a community water system, Los Angeles, City of - Power Plant #1 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, “Los Angeles, City of - Power Plant #1, PWSID CA1900555, California”, https://aquacensus.com/water-systems/california/los-angeles-city-of-power-plant-1-ca1900555 (data as of October 1, 2026).