Public water system · CA1700739
ActiveMendo Mill and Lumber Company
At a glance
Mendo Mill and Lumber Company (PWSID CA1700739) is an active non-transient non-community water system in Lake County, California. It reports serving 46 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
46
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Mendo Mill and Lumber Company compare with other water systems in Lake County?
By EPA's size categories, Mendo Mill and Lumber Company is a very small system (500 people or fewer). Lake County has 81 active public water systems. Its population served is well below the county average of 895 people per system, and accounts for less than 0.1% of the 72,454 people reported by systems filed under the county. Across California, the 7,479 active systems average 5,706 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Mendo Mill and Lumber Company is well below that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. California has 1,466 active non-transient non-community water systems, 20% 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 Mendo Mill and Lumber Company?
EPA lists Mendo Mill and Lumber Company 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. 60 of the 81 active systems in Lake County (74%) are also privately owned.
Does Mendo Mill and Lumber Company 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 Mendo Mill and Lumber Company. For the latest compliance status, check EPA ECHO for current compliance history.
Mendo Mill and Lumber Company: frequently asked questions
Who runs Mendo Mill and Lumber Company?
Mendo Mill and Lumber Company (PWSID CA1700739) is a non-transient non-community water system privately owned. It is regulated by the CA state drinking water program.
How many people does Mendo Mill and Lumber Company serve?
Mendo Mill and Lumber Company reports serving 46 people through 1 service connection in Lake County, California.
Where does Mendo Mill and Lumber Company 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 Mendo Mill and Lumber Company have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Mendo Mill and Lumber Company'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 Mendo Mill and Lumber Company's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Mendo Mill and Lumber Company is a non-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 Lake County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Highlands Mutual Water Company | Lake | 7,772 | Community | Surface water |
| Hidden Valley Lake Csd | Lake | 6,235 | Community | Groundwater |
| Konocti County Water District | Lake | 5,928 | Community | Surface water |
| Lakeport, City of | Lake | 4,762 | Community | Surface water |
| Golden State Water Co.-Clearlake System | Lake | 4,644 | Community | Surface water |
| Mt. Konocti Mutual Water Company | Lake | 4,360 | Community | Surface water |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Mendo Mill and Lumber Company, PWSID CA1700739, California”, https://aquacensus.com/water-systems/california/mendo-mill-and-lumber-company-ca1700739 (data as of October 1, 2026).