Public water system · CA2210511
ActiveYosemite Nps-Glacier Point
At a glance
Yosemite Nps-Glacier Point (PWSID CA2210511) is an active transient non-community water system in Mariposa County, California. It reports serving 4,000 people through 6 service connections. Its primary water source is surface water, and EPA lists it as owned by the federal government. EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in October 2015.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
4,000
Service connections
6
Primary source
SW
Surface water
System type
TNCWS
Transient non-community water system
System record
How does Yosemite Nps-Glacier Point compare with other water systems in Mariposa County?
By EPA's size categories, Yosemite Nps-Glacier Point is a medium system (3,301 to 10,000 people). Mariposa County has 67 active public water systems, and Yosemite Nps-Glacier Point is the largest of them by population served. Its population served is about 11 times the county average of 381 people per system, and accounts for 16% of the 25,508 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 Yosemite Nps-Glacier Point is about 28 times 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. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 609 California systems (8.1%) list surface water as their primary source.
Who owns and regulates Yosemite Nps-Glacier Point?
EPA lists Yosemite Nps-Glacier Point as owned by the federal 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. 13 of the 67 active systems in Mariposa County (19%) are also owned by the federal government.
Does Yosemite Nps-Glacier Point have drinking water violations?
EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in October 2015. The violations listed here began between January 2004 and October 2015. By type: 2 monitoring and reporting and 1 required treatment not met. The contaminants or rules involved are Total coliform bacteria (TCR), Interim Enhanced Surface Water Treatment Rule and Nitrate. 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 |
|---|---|---|---|---|
| 2015-10-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2005-07-01 | Required treatment not metMonthly Turbidity Exceed (Enhanced SWTR) · code 44 | Interim Enhanced Surface Water Treatment Rulecode 0300 | Yes | Resolved |
| 2004-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | 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.
Yosemite Nps-Glacier Point: frequently asked questions
Who runs Yosemite Nps-Glacier Point?
Yosemite Nps-Glacier Point (PWSID CA2210511) is a transient non-community water system owned by the federal government. It is regulated by the CA state drinking water program.
How many people does Yosemite Nps-Glacier Point serve?
Yosemite Nps-Glacier Point reports serving 4,000 people through 6 service connections in Mariposa County, California.
Where does Yosemite Nps-Glacier Point get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Yosemite Nps-Glacier Point have any drinking water violations?
EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in October 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 Yosemite Nps-Glacier Point'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 October 2015. For current results, consult EPA ECHO, or the CA state drinking water program.
Where can I find Yosemite Nps-Glacier Point's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Yosemite Nps-Glacier Point 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 Mariposa County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Blm-Briceburg Water System | Mariposa | 3,196 | Transient non-community | Groundwater |
| Mariposa Public Utility Dist | Mariposa | 2,000 | Community | Surface water |
| Yosemite Nps-Bridalveil Fall | Mariposa | 1,163 | Transient non-community | Groundwater |
| Mid - Mc Swain Rec Area | Mariposa | 1,119 | Transient non-community | Surface water |
| Yosemite Nps-Yosemite Valley | Mariposa | 1,000 | Community | Groundwater |
| Yosemite Nps-Badger Pass | Mariposa | 1,000 | Transient non-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, “Yosemite Nps-Glacier Point, PWSID CA2210511, California”, https://aquacensus.com/water-systems/california/yosemite-nps-glacier-point-ca2210511 (data as of October 1, 2026).