Public water system · CA2300906
ActiveI & E Lath Mill
At a glance
I & E Lath Mill (PWSID CA2300906) is an active non-transient non-community water system in Mendocino County, California. It reports serving 31 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list one violation for this system; it is not health-based, and the most recent began in August 2017.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
31
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does I & E Lath Mill compare with other water systems in Mendocino County?
By EPA's size categories, I & E Lath Mill 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 less than 0.1% 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 non-transient non-community water system reports serving 430 people, so I & E Lath Mill 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 I & E Lath Mill?
EPA lists I & E Lath Mill 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 I & E Lath Mill have drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in August 2017. By type: 1 monitoring. The contaminant or rule involved is Revised Total Coliform Rule. EPA lists 1 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 |
|---|---|---|---|---|
| 2017-08-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
The one violation in EPA's records.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.
I & E Lath Mill: frequently asked questions
Who runs I & E Lath Mill?
I & E Lath Mill (PWSID CA2300906) is a non-transient non-community water system privately owned. It is regulated by the CA state drinking water program.
How many people does I & E Lath Mill serve?
I & E Lath Mill reports serving 31 people through 1 service connection in Mendocino County, California.
Where does I & E Lath Mill 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 I & E Lath Mill have any drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in August 2017. 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 I & E Lath Mill'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 one violation for this system; it is not health-based, and the most recent began in August 2017. For current results, consult EPA ECHO, or the CA state drinking water program.
Where can I find I & E Lath Mill's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. I & E Lath Mill 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 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, “I & E Lath Mill, PWSID CA2300906, California”, https://aquacensus.com/water-systems/california/i-e-lath-mill-ca2300906 (data as of October 1, 2026).