Public water system · CA0510009
ActiveBlue Lake Springs Mut Wtr
At a glance
Blue Lake Springs Mut Wtr (PWSID CA0510009) is an active community water system in Calaveras County, California. It reports serving 4,841 people through 1,729 service connections. Its primary water source is purchased surface water, and EPA lists it as privately owned. EPA's records list 2 violations for this system; none is health-based, and the most recent began in July 2019.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
4,841
Service connections
1,729
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Blue Lake Springs Mut Wtr compare with other water systems in Calaveras County?
By EPA's size categories, Blue Lake Springs Mut Wtr is a medium system (3,301 to 10,000 people). Calaveras County has 51 active public water systems, and Blue Lake Springs Mut Wtr is the 5th-largest of them by population served. Its population served is about 4.4 times the county average of 1,102 people per system, and accounts for 8.6% of the 56,208 people reported by systems filed under the county. Across California, the 7,479 active systems average 5,706 people each. Nationally, the average active community water system reports serving 6,703 people, so Blue Lake Springs Mut Wtr is about 28% below that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. California has 2,997 active community water systems, 40% of the state's 7,479 active systems. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 506 California systems (6.8%) list purchased surface water as their primary source.
Who owns and regulates Blue Lake Springs Mut Wtr?
EPA lists Blue Lake Springs Mut Wtr 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. 34 of the 51 active systems in Calaveras County (67%) are also privately owned.
Does Blue Lake Springs Mut Wtr have drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in July 2019. The violations listed here began between April 1993 and July 2019. By type: 1 public notice, recordkeeping or other and 1 monitoring and reporting. The contaminants or rules involved are Consumer Confidence 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 |
|---|---|---|---|---|
| 2019-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 1993-04-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | 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.
Blue Lake Springs Mut Wtr: frequently asked questions
Who runs Blue Lake Springs Mut Wtr?
Blue Lake Springs Mut Wtr (PWSID CA0510009) is a community water system privately owned. It is regulated by the CA state drinking water program.
How many people does Blue Lake Springs Mut Wtr serve?
Blue Lake Springs Mut Wtr reports serving 4,841 people through 1,729 service connections in Calaveras County, California.
Where does Blue Lake Springs Mut Wtr get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Blue Lake Springs Mut Wtr have any drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in July 2019. 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 Blue Lake Springs Mut Wtr'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; none is health-based, and the most recent began in July 2019. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find Blue Lake Springs Mut Wtr's water quality report?
As a community water system, Blue Lake Springs Mut Wtr must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Calaveras County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Ccwd - Ebbetts Pass | Calaveras | 11,545 | Community | Surface water |
| Ccwd - Jenny Lind | Calaveras | 9,861 | Community | Surface water |
| Calaveras PUD | Calaveras | 6,286 | Community | Surface water |
| Ccwd - Copper Cove | Calaveras | 5,187 | Community | Surface water |
| Union Public Utility District | Calaveras | 4,774 | Community | Surface water |
| Angels, City of | Calaveras | 3,836 | Community | 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, “Blue Lake Springs Mut Wtr, PWSID CA0510009, California”, https://aquacensus.com/water-systems/california/blue-lake-springs-mut-wtr-ca0510009 (data as of October 1, 2026).