Public water system · CA4700554
ActiveCaltrans-Collier Rest Stop
At a glance
Caltrans-Collier Rest Stop (PWSID CA4700554) is an active transient non-community water system in Siskiyou County, California. It reports serving 1,400 people through 1 service connection. Its primary water source is surface water, and EPA lists it as owned by a state government. EPA's Safe Drinking Water Act records list no violations for this system.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,400
Service connections
1
Primary source
SW
Surface water
System type
TNCWS
Transient non-community water system
System record
How does Caltrans-Collier Rest Stop compare with other water systems in Siskiyou County?
By EPA's size categories, Caltrans-Collier Rest Stop is a small system (501 to 3,300 people). Siskiyou County has 69 active public water systems. Its population served is about 136% above the county average of 593 people per system, and accounts for 3.4% 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 transient non-community water system reports serving 144 people, so Caltrans-Collier Rest Stop is about 9.7 times 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. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 609 California systems (8.1%) list surface water as their primary source.
Who owns and regulates Caltrans-Collier Rest Stop?
EPA lists Caltrans-Collier 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 69 active systems in Siskiyou County (7.2%) are also owned by a state government.
Does Caltrans-Collier Rest Stop have drinking water violations?
No SDWA violations on record.
EPA's SDWA violation and enforcement data (via EPA ECHO, updated quarterly) lists no violations for Caltrans-Collier Rest Stop. For the latest compliance status, check EPA ECHO for current compliance history.
Caltrans-Collier Rest Stop: frequently asked questions
Who runs Caltrans-Collier Rest Stop?
Caltrans-Collier Rest Stop (PWSID CA4700554) 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-Collier Rest Stop serve?
Caltrans-Collier Rest Stop reports serving 1,400 people through 1 service connection in Siskiyou County, California.
Where does Caltrans-Collier Rest Stop get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Caltrans-Collier Rest Stop have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Caltrans-Collier 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 Safe Drinking Water Act records list no violations for this system. For current results, consult EPA ECHO, or the CA state drinking water program.
Where can I find Caltrans-Collier Rest Stop's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Caltrans-Collier 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 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, “Caltrans-Collier Rest Stop, PWSID CA4700554, California”, https://aquacensus.com/water-systems/california/caltrans-collier-rest-stop-ca4700554 (data as of October 1, 2026).