Public water system · CA3610053
ActiveWestern Heights Water Company
At a glance
Western Heights Water Company (PWSID CA3610053) is an active community water system in San Bernardino County, California. It reports serving 7,705 people through 2,335 service connections. Its primary water source is purchased surface water, and EPA lists it as privately owned. EPA's records list 3 violations for this system; all are health-based, and the most recent began in August 2006.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
7,705
Service connections
2,335
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Western Heights Water Company compare with other water systems in San Bernardino County?
By EPA's size categories, Western Heights Water Company is a medium system (3,301 to 10,000 people). San Bernardino County has 306 active public water systems. Its population served is about 16% below the county average of 9,227 people per system, and accounts for 0.3% of the 2,823,318 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 Western Heights Water Company is about 15% 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 Western Heights Water Company?
EPA lists Western Heights Water Company 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. 201 of the 306 active systems in San Bernardino County (66%) are also privately owned.
Does Western Heights Water Company have drinking water violations?
EPA's records list 3 violations for this system; all are health-based, and the most recent began in August 2006. The violations listed here began between June 1987 and August 2006. By type: 3 contaminant level above the legal limit. The contaminant or rule involved most often is Nitrate (2 of them). EPA lists 2 as archived and 1 as resolved. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status. 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 |
|---|---|---|---|---|
| 2006-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1987-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitratecode 1040 | Yes | Archived |
| 1987-06-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitratecode 1040 | Yes | Archived |
All 3 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.
Western Heights Water Company: frequently asked questions
Who runs Western Heights Water Company?
Western Heights Water Company (PWSID CA3610053) is a community water system privately owned. It is regulated by the CA state drinking water program.
How many people does Western Heights Water Company serve?
Western Heights Water Company reports serving 7,705 people through 2,335 service connections in San Bernardino County, California.
Where does Western Heights Water Company 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 Western Heights Water Company have any drinking water violations?
EPA's records list 3 violations for this system; all are health-based, and the most recent began in August 2006. 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 Western Heights Water Company'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 3 violations for this system; all are health-based, and the most recent began in August 2006. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find Western Heights Water Company's water quality report?
As a community water system, Western Heights Water Company 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 San Bernardino County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| San Gabriel Valley Wc - Fontana | San Bernardino | 237,700 | Community | Surface water |
| San Bernardino City | San Bernardino | 214,665 | Community | Groundwater |
| Cucamonga Valley Water District | San Bernardino | 211,069 | Community | Surface water |
| Ontario Municipal Utilities Company | San Bernardino | 185,010 | Community | Purchased surface water |
| Victorville Water District | San Bernardino | 135,983 | Community | Purchased surface water |
| San Bernardino Valley Wd | San Bernardino | 109,608 | Community | Groundwater |
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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, “Western Heights Water Company, PWSID CA3610053, California”, https://aquacensus.com/water-systems/california/western-heights-water-company-ca3610053 (data as of October 1, 2026).