Public water system · CA4700546
ActiveCal Ore Mobile Estates
At a glance
Cal Ore Mobile Estates (PWSID CA4700546) is an active community water system in Siskiyou County, California. It reports serving 146 people through 53 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 9 violations for this system; 5 are health-based, and the most recent began in October 2014.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
146
Service connections
53
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Cal Ore Mobile Estates compare with other water systems in Siskiyou County?
By EPA's size categories, Cal Ore Mobile Estates is a very small system (500 people or fewer). Siskiyou County has 69 active public water systems. Its population served is well below the county average of 593 people per system, and accounts for 0.4% of the 40,908 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 Cal Ore Mobile Estates 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 Cal Ore Mobile Estates?
EPA lists Cal Ore Mobile Estates 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. 28 of the 69 active systems in Siskiyou County (41%) are also privately owned.
Does Cal Ore Mobile Estates have drinking water violations?
EPA's records list 9 violations for this system; 5 are health-based, and the most recent began in October 2014. The violations listed here began between October 1981 and October 2014. By type: 5 contaminant level above the legal limit, 3 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Total coliform bacteria (TCR) (6 of them). EPA lists 7 as resolved and 2 as archived. 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. 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 |
|---|---|---|---|---|
| 2014-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2010-12-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2007-05-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2005-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2004-02-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1993-11-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1993-07-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1984-07-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
| 1981-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Archived |
All 9 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.
Cal Ore Mobile Estates: frequently asked questions
Who runs Cal Ore Mobile Estates?
Cal Ore Mobile Estates (PWSID CA4700546) is a community water system privately owned. It is regulated by the CA state drinking water program.
How many people does Cal Ore Mobile Estates serve?
Cal Ore Mobile Estates reports serving 146 people through 53 service connections in Siskiyou County, California.
Where does Cal Ore Mobile Estates 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 Cal Ore Mobile Estates have any drinking water violations?
EPA's records list 9 violations for this system; 5 are health-based, and the most recent began in October 2014. 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 Cal Ore Mobile Estates' 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 9 violations for this system; 5 are health-based, and the most recent began in October 2014. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find Cal Ore Mobile Estates' water quality report?
As a community water system, Cal Ore Mobile Estates 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 Siskiyou County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Yreka, City of | Siskiyou | 7,825 | Community | Surface water |
| Mt. Shasta, City of | Siskiyou | 3,642 | Community | Groundwater |
| Mt. Shasta Ski Park | Siskiyou | 3,500 | Transient non-community | Groundwater |
| Lake Shastina C.S.D | Siskiyou | 2,790 | Community | Groundwater |
| Weed, City of | Siskiyou | 2,662 | Community | Groundwater |
| Lake Siskiyou Campground | Siskiyou | 1,800 | Transient non-community | 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, “Cal Ore Mobile Estates, PWSID CA4700546, California”, https://aquacensus.com/water-systems/california/cal-ore-mobile-estates-ca4700546 (data as of October 1, 2026).