Public water system · CA1900147
ActiveMescal Creek Water, Inc.
At a glance
Mescal Creek Water, Inc. (PWSID CA1900147) is an active community water system in Los Angeles County, California. It reports serving 25 people through 15 service connections. Its primary water source is 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 January 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
25
Service connections
15
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Mescal Creek Water, Inc. compare with other water systems in Los Angeles County?
By EPA's size categories, Mescal Creek Water, Inc. 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 Mescal Creek Water, Inc. 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 Mescal Creek Water, Inc.?
EPA lists Mescal Creek Water, Inc. 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 Mescal Creek Water, Inc. have drinking water violations?
EPA's records list 2 violations for this system; all are health-based, and the most recent began in January 2026. The violations listed here began between May 2016 and January 2026. By type: 2 required treatment not met. The contaminants or rules involved are Stage 1 Disinfectants and Disinfection Byproducts Rule and Surface Water Treatment Rule. EPA lists 2 as unaddressed. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2026-01-23 | Required treatment not metTreatment Technique No Certif. Operator · code 12 | Stage 1 Disinfectants and Disinfection Byproducts Rulecode 0400 | Yes | Unaddressed |
| 2016-05-12 | Required treatment not metFailure to Filter (SWTR) · code 42 | Surface Water Treatment Rulecode 0200 | Yes | Unaddressed |
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.
Mescal Creek Water, Inc.: frequently asked questions
Who runs Mescal Creek Water, Inc.?
Mescal Creek Water, Inc. (PWSID CA1900147) is a community water system privately owned. It is regulated by the CA state drinking water program.
How many people does Mescal Creek Water, Inc. serve?
Mescal Creek Water, Inc. reports serving 25 people through 15 service connections in Los Angeles County, California.
Where does Mescal Creek Water, Inc. 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 Mescal Creek Water, Inc. have any drinking water violations?
EPA's records list 2 violations for this system; all are health-based, and the most recent began in January 2026. 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 Mescal Creek Water, Inc.'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 January 2026. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find Mescal Creek Water, Inc.'s water quality report?
As a community water system, Mescal Creek Water, Inc. 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, “Mescal Creek Water, Inc., PWSID CA1900147, California”, https://aquacensus.com/water-systems/california/mescal-creek-water-inc-ca1900147 (data as of October 1, 2026).