Public water system · CA3610110
ActiveArrowbear Park Cwd
At a glance
Arrowbear Park Cwd (PWSID CA3610110) is an active community water system in San Bernardino County, California. It reports serving 1,856 people through 956 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 4 violations for this system; 1 is health-based, and the most recent began in November 2009.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,856
Service connections
956
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Arrowbear Park Cwd compare with other water systems in San Bernardino County?
By EPA's size categories, Arrowbear Park Cwd is a small system (501 to 3,300 people). San Bernardino County has 306 active public water systems. Its population served is well below the county average of 9,227 people per system, and accounts for less than 0.1% 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 Arrowbear Park Cwd 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. 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 Arrowbear Park Cwd?
EPA lists Arrowbear Park Cwd 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 Arrowbear Park Cwd have drinking water violations?
EPA's records list 4 violations for this system; 1 is health-based, and the most recent began in November 2009. The violations listed here began between July 1993 and November 2009. By type: 3 monitoring and reporting and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 4 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 |
|---|---|---|---|---|
| 2009-11-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2009-11-01 | Monitoring and reportingMonitoring, Repeat Major (TCR) · code 25 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2009-11-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1993-07-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
All 4 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.
Arrowbear Park Cwd: frequently asked questions
Who runs Arrowbear Park Cwd?
Arrowbear Park Cwd (PWSID CA3610110) is a community water system owned by a local government. It is regulated by the CA state drinking water program.
How many people does Arrowbear Park Cwd serve?
Arrowbear Park Cwd reports serving 1,856 people through 956 service connections in San Bernardino County, California.
Where does Arrowbear Park Cwd 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 Arrowbear Park Cwd have any drinking water violations?
EPA's records list 4 violations for this system; 1 is health-based, and the most recent began in November 2009. 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 Arrowbear Park Cwd'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 4 violations for this system; 1 is health-based, and the most recent began in November 2009. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find Arrowbear Park Cwd's water quality report?
As a community water system, Arrowbear Park Cwd 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, “Arrowbear Park Cwd, PWSID CA3610110, California”, https://aquacensus.com/water-systems/california/arrowbear-park-cwd-ca3610110 (data as of October 1, 2026).