Public water system · CA1910130
ActiveQuartz Hill Water Dist.
At a glance
Quartz Hill Water Dist. (PWSID CA1910130) is an active community water system in Los Angeles County, California. It reports serving 19,100 people through 5,850 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in June 1999.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
19,100
Service connections
5,850
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Quartz Hill Water Dist. compare with other water systems in Los Angeles County?
By EPA's size categories, Quartz Hill Water Dist. is a large system (10,001 to 100,000 people). Los Angeles County has 275 active public water systems. Its population served is about half of the county average of 36,762 people per system, and accounts for 0.2% 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 Quartz Hill Water Dist. is about 185% above 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 Quartz Hill Water Dist.?
EPA lists Quartz Hill Water Dist. 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 Quartz Hill Water Dist. have drinking water violations?
EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in June 1999. The violations listed here began between November 1995 and June 1999. By type: 1 public notice, recordkeeping or other and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). EPA lists 2 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 |
|---|---|---|---|---|
| 1999-06-01 | Public notice, recordkeeping or otherNotification, State · code 05 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1995-11-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
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.
Quartz Hill Water Dist.: frequently asked questions
Who runs Quartz Hill Water Dist.?
Quartz Hill Water Dist. (PWSID CA1910130) is a community water system owned by a local government. It is regulated by the CA state drinking water program.
How many people does Quartz Hill Water Dist. serve?
Quartz Hill Water Dist. reports serving 19,100 people through 5,850 service connections in Los Angeles County, California.
Where does Quartz Hill Water Dist. 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 Quartz Hill Water Dist. have any drinking water violations?
EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in June 1999. 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 Quartz Hill Water Dist.'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; 1 is health-based, and the most recent began in June 1999. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find Quartz Hill Water Dist.'s water quality report?
As a community water system, Quartz Hill Water Dist. 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, “Quartz Hill Water Dist., PWSID CA1910130, California”, https://aquacensus.com/water-systems/california/quartz-hill-water-dist-ca1910130 (data as of October 1, 2026).