Public water system · CA4910701
ActiveU.S. Coast Guard Training Center
At a glance
U.S. Coast Guard Training Center (PWSID CA4910701) is an active community water system in Sonoma County, California. It reports serving 469 people through 217 service connections. Its primary water source is purchased groundwater, and EPA lists it as owned by the federal government. EPA's records list 5 violations for this system; 2 are health-based, and the most recent began in October 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
469
Service connections
217
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does U.S. Coast Guard Training Center compare with other water systems in Sonoma County?
By EPA's size categories, U.S. Coast Guard Training Center is a very small system (500 people or fewer). Sonoma County has 441 active public water systems. Its population served is about 57% below the county average of 1,092 people per system, and accounts for less than 0.1% of the 481,435 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 U.S. Coast Guard Training Center is well 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 groundwater means the system buys groundwater from another public water system rather than drawing its own. 76 California systems (1%) list purchased groundwater as their primary source.
Who owns and regulates U.S. Coast Guard Training Center?
EPA lists U.S. Coast Guard Training Center 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. 2 of the 441 active systems in Sonoma County (0.5%) are also owned by the federal government.
Does U.S. Coast Guard Training Center have drinking water violations?
EPA's records list 5 violations for this system; 2 are health-based, and the most recent began in October 2024. The violations listed here began between July 1991 and October 2024. By type: 2 monitoring and reporting, 1 required treatment not met, 1 reporting and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Lead and Copper Rule Revisions (2 of them). EPA lists 3 as resolved and 2 as unaddressed. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2024-10-17 | Required treatment not metLSL Inventory · code 2E | Lead and Copper Rule Revisionscode 5200 | Yes | Unaddressed |
| 2024-10-17 | ReportingLSL Reporting · code 4G | Lead and Copper Rule Revisionscode 5200 | No | Unaddressed |
| 2005-05-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1993-07-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1991-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 5 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.
U.S. Coast Guard Training Center: frequently asked questions
Who runs U.S. Coast Guard Training Center?
U.S. Coast Guard Training Center (PWSID CA4910701) is a community water system owned by the federal government. It is regulated by the CA state drinking water program.
How many people does U.S. Coast Guard Training Center serve?
U.S. Coast Guard Training Center reports serving 469 people through 217 service connections in Sonoma County, California.
Where does U.S. Coast Guard Training Center get its water?
EPA SDWIS lists this system's primary water source as purchased groundwater. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own.
Does U.S. Coast Guard Training Center have any drinking water violations?
EPA's records list 5 violations for this system; 2 are health-based, and the most recent began in October 2024. 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 U.S. Coast Guard Training Center'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 5 violations for this system; 2 are health-based, and the most recent began in October 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find U.S. Coast Guard Training Center's water quality report?
As a community water system, U.S. Coast Guard Training Center 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 Sonoma County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Santa Rosa, City of | Sonoma | 175,396 | Community | Groundwater |
| Petaluma, City of | Sonoma | 60,781 | Community | Groundwater |
| Rohnert Park, City of | Sonoma | 43,821 | Community | Groundwater |
| Windsor, Town of | Sonoma | 25,561 | Community | Groundwater |
| Valley of the Moon Water District | Sonoma | 23,107 | Community | Groundwater |
| Sonoma, City of | Sonoma | 11,725 | 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, “U.S. Coast Guard Training Center, PWSID CA4910701, California”, https://aquacensus.com/water-systems/california/u-s-coast-guard-training-center-ca4910701 (data as of October 1, 2026).