Public water system · CA4901264
ActiveRatna Ling Retreat
At a glance
Ratna Ling Retreat (PWSID CA4901264) is an active non-transient non-community water system in Sonoma County, California. It reports serving 55 people through 34 service connections. Its primary water source is surface water, and EPA lists it as privately owned. EPA's records list 2 violations for this system; all are health-based, and the most recent began in January 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
55
Service connections
34
Primary source
SW
Surface water
System type
NTNCWS
Non-transient non-community water system
System record
How does Ratna Ling Retreat compare with other water systems in Sonoma County?
By EPA's size categories, Ratna Ling Retreat is a very small system (500 people or fewer). Sonoma County has 441 active public water systems. Its population served is well 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 non-transient non-community water system reports serving 430 people, so Ratna Ling Retreat is well below that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. California has 1,466 active non-transient non-community water systems, 20% 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 Ratna Ling Retreat?
EPA lists Ratna Ling Retreat 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. 371 of the 441 active systems in Sonoma County (84%) are also privately owned.
Does Ratna Ling Retreat have drinking water violations?
EPA's records list 2 violations for this system; all are health-based, and the most recent began in January 2023. The violations listed here began between January 2020 and January 2023. By type: 1 contaminant level above the legal limit and 1 required treatment not met. The contaminants or rules involved are Haloacetic acids (HAA5) and Surface Water Treatment Rule. 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 |
|---|---|---|---|---|
| 2023-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2020-01-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | 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.
Ratna Ling Retreat: frequently asked questions
Who runs Ratna Ling Retreat?
Ratna Ling Retreat (PWSID CA4901264) is a non-transient non-community water system privately owned. It is regulated by the CA state drinking water program.
How many people does Ratna Ling Retreat serve?
Ratna Ling Retreat reports serving 55 people through 34 service connections in Sonoma County, California.
Where does Ratna Ling Retreat 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 Ratna Ling Retreat have any drinking water violations?
EPA's records list 2 violations for this system; all are health-based, and the most recent began in January 2023. 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 Ratna Ling Retreat'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; all are health-based, and the most recent began in January 2023. For current results, consult EPA ECHO, or the CA state drinking water program.
Where can I find Ratna Ling Retreat's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Ratna Ling Retreat is a non-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 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 |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Ratna Ling Retreat, PWSID CA4901264, California”, https://aquacensus.com/water-systems/california/ratna-ling-retreat-ca4901264 (data as of October 1, 2026).