Public water system · CA3610029
ActiveMonte Vista Wd
At a glance
Monte Vista Wd (PWSID CA3610029) is an active community water system in San Bernardino County, California. It reports serving 56,017 people through 11,965 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list one violation for this system; it is not health-based, and the most recent began in June 2013.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
56,017
Service connections
11,965
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Monte Vista Wd compare with other water systems in San Bernardino County?
By EPA's size categories, Monte Vista Wd is a large system (10,001 to 100,000 people). San Bernardino County has 306 active public water systems. Its population served is about 6.1 times the county average of 9,227 people per system, and accounts for 2% 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 Monte Vista Wd is about 8.4 times 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 Monte Vista Wd?
EPA lists Monte Vista Wd 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. 74 of the 306 active systems in San Bernardino County (24%) are also owned by a local government.
Does Monte Vista Wd have drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in June 2013. By type: 1 monitoring and reporting. The contaminant or rule involved is E. coli. EPA lists 1 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 |
|---|---|---|---|---|
| 2013-06-07 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
The one violation in EPA's records.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.
Monte Vista Wd: frequently asked questions
Who runs Monte Vista Wd?
Monte Vista Wd (PWSID CA3610029) is a community water system owned by a local government. It is regulated by the CA state drinking water program.
How many people does Monte Vista Wd serve?
Monte Vista Wd reports serving 56,017 people through 11,965 service connections in San Bernardino County, California.
Where does Monte Vista Wd 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 Monte Vista Wd have any drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in June 2013. 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 Monte Vista Wd'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 one violation for this system; it is not health-based, and the most recent began in June 2013. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find Monte Vista Wd's water quality report?
As a community water system, Monte Vista Wd 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 |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Monte Vista Wd, PWSID CA3610029, California”, https://aquacensus.com/water-systems/california/monte-vista-wd-ca3610029 (data as of October 1, 2026).