Public water system · CA3200009
ActiveCaltrans-Massack Rest Stop
At a glance
Caltrans-Massack Rest Stop (PWSID CA3200009) is an active transient non-community water system in Plumas County, California. It reports serving 350 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as owned by a state government. EPA's records list 3 violations for this system; none is health-based, and the most recent began in September 2010.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
350
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Caltrans-Massack Rest Stop compare with other water systems in Plumas County?
By EPA's size categories, Caltrans-Massack Rest Stop is a very small system (500 people or fewer). Plumas County has 108 active public water systems. Its population served is about 15% above the county average of 303 people per system, and accounts for 1.1% of the 32,740 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 Caltrans-Massack Rest Stop is about 143% 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 Caltrans-Massack Rest Stop?
EPA lists Caltrans-Massack Rest Stop as owned by a state 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. 5 of the 108 active systems in Plumas County (4.6%) are also owned by a state government.
Does Caltrans-Massack Rest Stop have drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in September 2010. The violations listed here began between November 1993 and September 2010. By type: 3 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 3 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 |
|---|---|---|---|---|
| 2010-09-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2005-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1993-11-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 3 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.
Caltrans-Massack Rest Stop: frequently asked questions
Who runs Caltrans-Massack Rest Stop?
Caltrans-Massack Rest Stop (PWSID CA3200009) is a transient non-community water system owned by a state government. It is regulated by the CA state drinking water program.
How many people does Caltrans-Massack Rest Stop serve?
Caltrans-Massack Rest Stop reports serving 350 people through 1 service connection in Plumas County, California.
Where does Caltrans-Massack Rest Stop 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 Caltrans-Massack Rest Stop have any drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in September 2010. 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 Caltrans-Massack Rest Stop'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 3 violations for this system; none is health-based, and the most recent began in September 2010. For current results, consult EPA ECHO, or the CA state drinking water program.
Where can I find Caltrans-Massack Rest Stop's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Caltrans-Massack Rest Stop 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 Plumas County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Lake Almanor Country Club Mwc | Plumas | 6,000 | Community | Groundwater |
| American Valley Csd | Plumas | 3,778 | Community | Groundwater |
| Chester Public U.D. | Plumas | 2,187 | Community | Groundwater |
| City of Portola | Plumas | 2,100 | Community | Purchased surface water |
| Hamilton Branch Csd | Plumas | 1,874 | Community | Groundwater |
| Plumas Eureka Csd | Plumas | 1,534 | 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, “Caltrans-Massack Rest Stop, PWSID CA3200009, California”, https://aquacensus.com/water-systems/california/caltrans-massack-rest-stop-ca3200009 (data as of October 1, 2026).