Public water system · CA0500032
ActiveNew Melones Lake Marina
At a glance
New Melones Lake Marina (PWSID CA0500032) is an active transient non-community water system in Calaveras County, California. It reports serving 100 people through 2 service connections. Its primary water source is groundwater, and EPA lists it as owned by a state government. EPA's records list 7 violations for this system; none is health-based, and the most recent began in April 2017.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
100
Service connections
2
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does New Melones Lake Marina compare with other water systems in Calaveras County?
By EPA's size categories, New Melones Lake Marina is a very small system (500 people or fewer). Calaveras County has 51 active public water systems. Its population served is well below the county average of 1,102 people per system, and accounts for 0.2% 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 transient non-community water system reports serving 144 people, so New Melones Lake Marina is about 31% below 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 New Melones Lake Marina?
EPA lists New Melones Lake Marina as owned by a state 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. 2 of the 51 active systems in Calaveras County (3.9%) are also owned by a state government.
Does New Melones Lake Marina have drinking water violations?
EPA's records list 7 violations for this system; none is health-based, and the most recent began in April 2017. The violations listed here began between December 2001 and April 2017. By type: 6 monitoring and reporting and 1 monitoring. The contaminant or rule involved most often is Total coliform bacteria (TCR) (6 of them). EPA lists 7 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 |
|---|---|---|---|---|
| 2017-04-01 | MonitoringMonitoring, Additional Routine (RTCR) · code 3B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2011-12-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2011-11-01 | Monitoring and reportingMonitoring, Repeat Major (TCR) · code 25 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2006-08-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2006-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2006-06-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2001-12-01 | Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 7 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.
New Melones Lake Marina: frequently asked questions
Who runs New Melones Lake Marina?
New Melones Lake Marina (PWSID CA0500032) is a transient non-community water system owned by a state government. It is regulated by the CA state drinking water program.
How many people does New Melones Lake Marina serve?
New Melones Lake Marina reports serving 100 people through 2 service connections in Calaveras County, California.
Where does New Melones Lake Marina 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 New Melones Lake Marina have any drinking water violations?
EPA's records list 7 violations for this system; none is health-based, and the most recent began in April 2017. 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 New Melones Lake Marina'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 7 violations for this system; none is health-based, and the most recent began in April 2017. For current results, consult EPA ECHO, or the CA state drinking water program.
Where can I find New Melones Lake Marina's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. New Melones Lake Marina 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 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 |
| Blue Lake Springs Mut Wtr | Calaveras | 4,841 | Community | Purchased surface water |
| Union Public Utility District | Calaveras | 4,774 | 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, “New Melones Lake Marina, PWSID CA0500032, California”, https://aquacensus.com/water-systems/california/new-melones-lake-marina-ca0500032 (data as of October 1, 2026).