Public water system · CA4800767
ActiveStocking Ranch Deepwell
At a glance
Stocking Ranch Deepwell (PWSID CA4800767) is an active non-transient non-community water system in Solano County, California. It reports serving 53 people through 6 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list one violation for this system; it is health-based, and the most recent began in October 1993.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
53
Service connections
6
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Stocking Ranch Deepwell compare with other water systems in Solano County?
By EPA's size categories, Stocking Ranch Deepwell is a very small system (500 people or fewer). Solano County has 63 active public water systems. Its population served is well below the county average of 7,509 people per system, and accounts for less than 0.1% of the 473,083 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 Stocking Ranch Deepwell 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 Stocking Ranch Deepwell?
EPA lists Stocking Ranch Deepwell 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. 19 of the 63 active systems in Solano County (30%) are also owned by a local government.
Does Stocking Ranch Deepwell have drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in October 1993. By type: 1 contaminant level above the legal limit. The contaminant or rule involved is Total coliform bacteria (TCR). 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 |
|---|---|---|---|---|
| 1993-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | 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.
Stocking Ranch Deepwell: frequently asked questions
Who runs Stocking Ranch Deepwell?
Stocking Ranch Deepwell (PWSID CA4800767) 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 Stocking Ranch Deepwell serve?
Stocking Ranch Deepwell reports serving 53 people through 6 service connections in Solano County, California.
Where does Stocking Ranch Deepwell 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 Stocking Ranch Deepwell have any drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in October 1993. 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 Stocking Ranch Deepwell'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 health-based, and the most recent began in October 1993. For current results, consult EPA ECHO, or the CA state drinking water program.
Where can I find Stocking Ranch Deepwell's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Stocking Ranch Deepwell 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 Solano County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of Vallejo | Solano | 121,420 | Community | Surface water |
| City of Fairfield | Solano | 120,377 | Community | Surface water |
| City of Vacaville | Solano | 99,650 | Community | Surface water |
| Suisun-Solano Water Authority | Solano | 29,105 | Community | Surface water |
| City of Benicia | Solano | 27,131 | Community | Surface water |
| California Water Service Co.-Travis Afb | Solano | 18,111 | 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, “Stocking Ranch Deepwell, PWSID CA4800767, California”, https://aquacensus.com/water-systems/california/stocking-ranch-deepwell-ca4800767 (data as of October 1, 2026).