Public water system · CA4300949
ActiveMt. Hamilton Grandview Restaurant
At a glance
Mt. Hamilton Grandview Restaurant (PWSID CA4300949) is an active transient non-community water system in Santa Clara County, California. It reports serving 181 people through 2 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 2 violations for this system; all are health-based, and the most recent began in July 2018.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
181
Service connections
2
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Mt. Hamilton Grandview Restaurant compare with other water systems in Santa Clara County?
By EPA's size categories, Mt. Hamilton Grandview Restaurant is a very small system (500 people or fewer). Santa Clara County has 121 active public water systems. Its population served is well below the county average of 17,334 people per system, and accounts for less than 0.1% of the 2,097,447 people reported by systems filed under the county. Across California, the 7,479 active systems average 5,706 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Mt. Hamilton Grandview Restaurant is about 26% above that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. California has 3,016 active transient non-community water systems, 40% 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 Mt. Hamilton Grandview Restaurant?
EPA lists Mt. Hamilton Grandview Restaurant 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. 82 of the 121 active systems in Santa Clara County (68%) are also privately owned.
Does Mt. Hamilton Grandview Restaurant have drinking water violations?
EPA's records list 2 violations for this system; all are health-based, and the most recent began in July 2018. The violations listed here began between October 1994 and July 2018. By type: 1 required treatment not met and 1 contaminant level above the legal limit. The contaminants or rules involved are Revised Total Coliform Rule and Total coliform bacteria (TCR). EPA lists 2 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 |
|---|---|---|---|---|
| 2018-07-01 | Required treatment not metTreatment Technique, Level 1 Assessment (RTCR) · code 2A | Revised Total Coliform Rulecode 8000 | Yes | Resolved |
| 1994-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 2 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.
Mt. Hamilton Grandview Restaurant: frequently asked questions
Who runs Mt. Hamilton Grandview Restaurant?
Mt. Hamilton Grandview Restaurant (PWSID CA4300949) is a transient non-community water system privately owned. It is regulated by the CA state drinking water program.
How many people does Mt. Hamilton Grandview Restaurant serve?
Mt. Hamilton Grandview Restaurant reports serving 181 people through 2 service connections in Santa Clara County, California.
Where does Mt. Hamilton Grandview Restaurant 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 Mt. Hamilton Grandview Restaurant have any drinking water violations?
EPA's records list 2 violations for this system; all are health-based, and the most recent began in July 2018. 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 Mt. Hamilton Grandview Restaurant'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 2 violations for this system; all are health-based, and the most recent began in July 2018. For current results, consult EPA ECHO, or the CA state drinking water program.
Where can I find Mt. Hamilton Grandview Restaurant's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Mt. Hamilton Grandview Restaurant is a 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 Santa Clara County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| San Jose Water | Santa Clara | 1,039,920 | Community | Surface water |
| City of Sunnyvale | Santa Clara | 157,566 | Community | Purchased surface water |
| City of Santa Clara | Santa Clara | 130,746 | Community | Purchased surface water |
| Great Oaks Wc Inc. | Santa Clara | 110,088 | Community | Groundwater |
| City of San Jose - Evg/Edv/Coy | Santa Clara | 101,265 | Community | Purchased surface water |
| City of Milpitas | Santa Clara | 81,773 | 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, “Mt. Hamilton Grandview Restaurant, PWSID CA4300949, California”, https://aquacensus.com/water-systems/california/mt-hamilton-grandview-restaurant-ca4300949 (data as of October 1, 2026).