Public water system · CA3610008
ActiveBig Bear City Csd
At a glance
Big Bear City Csd (PWSID CA3610008) is an active community water system in San Bernardino County, California. It reports serving 12,738 people through 6,223 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list one violation for this system; it is health-based, and the most recent began in July 1987.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
12,738
Service connections
6,223
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Big Bear City Csd compare with other water systems in San Bernardino County?
By EPA's size categories, Big Bear City Csd is a large system (10,001 to 100,000 people). San Bernardino County has 306 active public water systems. Its population served is about 38% above the county average of 9,227 people per system, and accounts for 0.5% 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 Big Bear City Csd is about twice 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. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 6,179 California systems (83%) list groundwater as their primary source.
Who owns and regulates Big Bear City Csd?
EPA lists Big Bear City Csd 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 Big Bear City Csd have drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in July 1987. By type: 1 contaminant level above the legal limit. The contaminant or rule involved is Fluoride. EPA lists 1 as archived. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 1987-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Fluoridecode 1025 | Yes | Archived |
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.
Big Bear City Csd: frequently asked questions
Who runs Big Bear City Csd?
Big Bear City Csd (PWSID CA3610008) is a community water system owned by a local government. It is regulated by the CA state drinking water program.
How many people does Big Bear City Csd serve?
Big Bear City Csd reports serving 12,738 people through 6,223 service connections in San Bernardino County, California.
Where does Big Bear City Csd get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Big Bear City Csd have any drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in July 1987. 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 Big Bear City Csd'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 health-based, and the most recent began in July 1987. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find Big Bear City Csd's water quality report?
As a community water system, Big Bear City Csd 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, “Big Bear City Csd, PWSID CA3610008, California”, https://aquacensus.com/water-systems/california/big-bear-city-csd-ca3610008 (data as of October 1, 2026).