Public water system · CA2300584
ActiveMendocino School District- Mendocino
At a glance
Mendocino School District- Mendocino (PWSID CA2300584) is an active non-transient non-community water system in Mendocino County, California. It reports serving 579 people through 15 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in March 1998.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
579
Service connections
15
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Mendocino School District- Mendocino compare with other water systems in Mendocino County?
By EPA's size categories, Mendocino School District- Mendocino is a small system (501 to 3,300 people). Mendocino County has 144 active public water systems. Its population served is roughly in line with the county average of 576 people per system, and accounts for 0.7% 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 Mendocino School District- Mendocino is about 35% above 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 Mendocino School District- Mendocino?
EPA lists Mendocino School District- Mendocino as owned by a local 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. 26 of the 144 active systems in Mendocino County (18%) are also owned by a local government.
Does Mendocino School District- Mendocino have drinking water violations?
EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in March 1998. The violations listed here began between July 1996 and March 1998. By type: 2 monitoring and reporting and 1 contaminant level above the legal limit. 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 |
|---|---|---|---|---|
| 1998-03-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1998-03-01 | Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1996-07-01 | 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.
Mendocino School District- Mendocino: frequently asked questions
Who runs Mendocino School District- Mendocino?
Mendocino School District- Mendocino (PWSID CA2300584) is a non-transient non-community water system owned by a local government. It is regulated by the CA state drinking water program.
How many people does Mendocino School District- Mendocino serve?
Mendocino School District- Mendocino reports serving 579 people through 15 service connections in Mendocino County, California.
Where does Mendocino School District- Mendocino 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 Mendocino School District- Mendocino have any drinking water violations?
EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in March 1998. 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 Mendocino School District- Mendocino'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; 1 is health-based, and the most recent began in March 1998. For current results, consult EPA ECHO, or the CA state drinking water program.
Where can I find Mendocino School District- Mendocino's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Mendocino School District- Mendocino 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, “Mendocino School District- Mendocino, PWSID CA2300584, California”, https://aquacensus.com/water-systems/california/mendocino-school-district-mendocino-ca2300584 (data as of October 1, 2026).