Public water system · CA5700643
ActivePlainfield Elem School - Water
At a glance
Plainfield Elem School - Water (PWSID CA5700643) is an active non-transient non-community water system in Yolo County, California. It reports serving 400 people through 17 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 January 2015.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
400
Service connections
17
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Plainfield Elem School - Water compare with other water systems in Yolo County?
By EPA's size categories, Plainfield Elem School - Water is a very small system (500 people or fewer). Yolo County has 88 active public water systems. Its population served is well below the county average of 2,951 people per system, and accounts for 0.2% of the 259,714 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 Plainfield Elem School - Water is roughly in line with 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 Plainfield Elem School - Water?
EPA lists Plainfield Elem School - Water 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. 15 of the 88 active systems in Yolo County (17%) are also owned by a local government.
Does Plainfield Elem School - Water have drinking water violations?
EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in January 2015. The violations listed here began between August 1984 and January 2015. By type: 1 monitoring and reporting, 1 contaminant level above the legal limit and 1 public notice, recordkeeping or other. The contaminants or rules involved are Nitrate and Total coliform bacteria (TCR). EPA lists 2 as resolved and 1 as archived. 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. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2015-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2001-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1984-08-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
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.
Plainfield Elem School - Water: frequently asked questions
Who runs Plainfield Elem School - Water?
Plainfield Elem School - Water (PWSID CA5700643) 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 Plainfield Elem School - Water serve?
Plainfield Elem School - Water reports serving 400 people through 17 service connections in Yolo County, California.
Where does Plainfield Elem School - Water 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 Plainfield Elem School - Water have any drinking water violations?
EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in January 2015. 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 Plainfield Elem School - Water'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 January 2015. For current results, consult EPA ECHO, or the CA state drinking water program.
Where can I find Plainfield Elem School - Water's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Plainfield Elem School - Water 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 Yolo County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of Davis | Yolo | 67,457 | Community | Purchased surface water |
| City of Woodland | Yolo | 61,462 | Community | Purchased surface water |
| City of West Sacramento | Yolo | 53,355 | Community | Surface water |
| Uc - Davis | Yolo | 49,616 | Community | Purchased surface water |
| City of Winters | Yolo | 7,115 | Community | Groundwater |
| Esparto C.S.D. | Yolo | 3,574 | Community | Groundwater |
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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, “Plainfield Elem School - Water, PWSID CA5700643, California”, https://aquacensus.com/water-systems/california/plainfield-elem-school-water-ca5700643 (data as of October 1, 2026).