Public water system · CA2710017
ActiveMarina Coast Water District
At a glance
Marina Coast Water District (PWSID CA2710017) is an active community water system in Monterey County, California. It reports serving 38,377 people through 10,832 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 4 violations for this system; all are health-based, and the most recent began in December 2006.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
38,377
Service connections
10,832
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Marina Coast Water District compare with other water systems in Monterey County?
By EPA's size categories, Marina Coast Water District is a large system (10,001 to 100,000 people). Monterey County has 307 active public water systems, and Marina Coast Water District is the 4th-largest of them by population served. Its population served is about 25 times the county average of 1,552 people per system, and accounts for 8.1% of the 476,419 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 Marina Coast Water District is about 5.7 times 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. 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 Marina Coast Water District?
EPA lists Marina Coast Water District 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. 28 of the 307 active systems in Monterey County (9.1%) are also owned by a local government.
Does Marina Coast Water District have drinking water violations?
EPA's records list 4 violations for this system; all are health-based, and the most recent began in December 2006. The violations listed here began between January 1998 and December 2006. By type: 4 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (4 of them). EPA lists 4 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 |
|---|---|---|---|---|
| 2006-12-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2006-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2004-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1998-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 4 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.
Marina Coast Water District: frequently asked questions
Who runs Marina Coast Water District?
Marina Coast Water District (PWSID CA2710017) is a community water system owned by a local government. It is regulated by the CA state drinking water program.
How many people does Marina Coast Water District serve?
Marina Coast Water District reports serving 38,377 people through 10,832 service connections in Monterey County, California.
Where does Marina Coast Water District 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 Marina Coast Water District have any drinking water violations?
EPA's records list 4 violations for this system; all are health-based, and the most recent began in December 2006. 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 Marina Coast Water District'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 4 violations for this system; all are health-based, and the most recent began in December 2006. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find Marina Coast Water District's water quality report?
As a community water system, Marina Coast Water District 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 Monterey County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Cwsc Salinas | Monterey | 123,679 | Community | Groundwater |
| Cal Am Water Company - Monterey | Monterey | 92,450 | Community | Groundwater under influence of surface water |
| Alco Water Service | Monterey | 56,253 | Community | Groundwater |
| Soledad, City of | Monterey | 19,455 | Community | Groundwater |
| Greenfield, City of | Monterey | 18,967 | Community | Groundwater |
| Cwsc King City | Monterey | 16,334 | 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, “Marina Coast Water District, PWSID CA2710017, California”, https://aquacensus.com/water-systems/california/marina-coast-water-district-ca2710017 (data as of October 1, 2026).