Public water system · CA3600360
ActiveSeven Oaks Mt Resort MHP
At a glance
Seven Oaks Mt Resort MHP (PWSID CA3600360) is an active transient non-community water system in San Bernardino County, California. It reports serving 323 people through 19 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 5 violations for this system; none is health-based, and the most recent began in January 2021.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
323
Service connections
19
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Seven Oaks Mt Resort MHP compare with other water systems in San Bernardino County?
By EPA's size categories, Seven Oaks Mt Resort MHP is a very small system (500 people or fewer). 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 transient non-community water system reports serving 144 people, so Seven Oaks Mt Resort MHP is about 124% above that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. California has 3,016 active transient non-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 Seven Oaks Mt Resort MHP?
EPA lists Seven Oaks Mt Resort MHP 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 Seven Oaks Mt Resort MHP have drinking water violations?
EPA's records list 5 violations for this system; none is health-based, and the most recent began in January 2021. The violations listed here began between October 1980 and January 2021. By type: 5 monitoring and reporting. The contaminant or rule involved most often is Nitrate (2 of them). EPA lists 3 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 |
|---|---|---|---|---|
| 2021-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2019-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1993-07-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1981-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Archived |
| 1980-10-30 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Archived |
All 5 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.
Seven Oaks Mt Resort MHP: frequently asked questions
Who runs Seven Oaks Mt Resort MHP?
Seven Oaks Mt Resort MHP (PWSID CA3600360) is a transient non-community water system privately owned. It is regulated by the CA state drinking water program.
How many people does Seven Oaks Mt Resort MHP serve?
Seven Oaks Mt Resort MHP reports serving 323 people through 19 service connections in San Bernardino County, California.
Where does Seven Oaks Mt Resort MHP 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 Seven Oaks Mt Resort MHP have any drinking water violations?
EPA's records list 5 violations for this system; none is health-based, and the most recent began in January 2021. 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 Seven Oaks Mt Resort MHP'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 5 violations for this system; none is health-based, and the most recent began in January 2021. For current results, consult EPA ECHO, or the CA state drinking water program.
Where can I find Seven Oaks Mt Resort MHP's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Seven Oaks Mt Resort MHP is a transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
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, “Seven Oaks Mt Resort MHP, PWSID CA3600360, California”, https://aquacensus.com/water-systems/california/seven-oaks-mt-resort-mhp-ca3600360 (data as of October 1, 2026).