Public water system · CA2301004
ActivePattersons Pub
At a glance
Pattersons Pub (PWSID CA2301004) is an active transient non-community water system in Mendocino County, California. It reports serving 160 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's Safe Drinking Water Act records list no violations for this system.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
160
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Pattersons Pub compare with other water systems in Mendocino County?
By EPA's size categories, Pattersons Pub is a very small system (500 people or fewer). Mendocino County has 144 active public water systems. Its population served is well below the county average of 576 people per system, and accounts for 0.2% of the 82,868 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 Pattersons Pub is about 11% 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 Pattersons Pub?
EPA lists Pattersons Pub 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. 98 of the 144 active systems in Mendocino County (68%) are also privately owned.
Does Pattersons Pub 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 Pattersons Pub. For the latest compliance status, check EPA ECHO for current compliance history.
Pattersons Pub: frequently asked questions
Who runs Pattersons Pub?
Pattersons Pub (PWSID CA2301004) is a transient non-community water system privately owned. It is regulated by the CA state drinking water program.
How many people does Pattersons Pub serve?
Pattersons Pub reports serving 160 people through 1 service connection in Mendocino County, California.
Where does Pattersons Pub 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 Pattersons Pub have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Pattersons Pub'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 Pattersons Pub's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Pattersons Pub 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 Mendocino County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Ukiah, City of | Mendocino | 16,607 | Community | Surface water |
| Fort Bragg, City of | Mendocino | 6,919 | Community | Surface water |
| Willits, City of | Mendocino | 6,175 | Community | Surface water |
| Millview County Water District | Mendocino | 5,500 | Community | Surface water |
| Redwood Valley County Water District | Mendocino | 5,200 | Community | Surface water |
| Willow County Water District | Mendocino | 3,797 | Community | Purchased 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, “Pattersons Pub, PWSID CA2301004, California”, https://aquacensus.com/water-systems/california/pattersons-pub-ca2301004 (data as of October 1, 2026).