Public water system · CA4900785
ActiveNoel Heights-Cal Water Service (Puc)
At a glance
Noel Heights-Cal Water Service (Puc) (PWSID CA4900785) is an active community water system in Sonoma County, California. It reports serving 79 people through 47 service connections. Its primary water source is groundwater under influence of surface water, and EPA lists it as privately owned. EPA's records list 4 violations for this system; none is health-based, and the most recent began in September 1984.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
79
Service connections
47
Primary source
GU
Groundwater under influence of surface water
System type
CWS
Community water system
System record
How does Noel Heights-Cal Water Service (Puc) compare with other water systems in Sonoma County?
By EPA's size categories, Noel Heights-Cal Water Service (Puc) 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 community water system reports serving 6,703 people, so Noel Heights-Cal Water Service (Puc) 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. Groundwater under the influence of surface water is well or spring water that the regulator has found to be affected by nearby surface water, so it is regulated under the surface-water treatment rules. 105 California systems (1.4%) list groundwater under influence of surface water as their primary source.
Who owns and regulates Noel Heights-Cal Water Service (Puc)?
EPA lists Noel Heights-Cal Water Service (Puc) 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 Noel Heights-Cal Water Service (Puc) have drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in September 1984. The violations listed here began between October 1980 and September 1984. By type: 2 public notice, recordkeeping or other and 2 monitoring and reporting. The contaminant or rule involved most often is Gross alpha (excluding radon and uranium) (2 of them). EPA lists 4 as archived. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 1984-09-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
| 1984-07-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
| 1981-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Archived |
| 1980-10-30 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Archived |
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.
Noel Heights-Cal Water Service (Puc): frequently asked questions
Who runs Noel Heights-Cal Water Service (Puc)?
Noel Heights-Cal Water Service (Puc) (PWSID CA4900785) is a community water system privately owned. It is regulated by the CA state drinking water program.
How many people does Noel Heights-Cal Water Service (Puc) serve?
Noel Heights-Cal Water Service (Puc) reports serving 79 people through 47 service connections in Sonoma County, California.
Where does Noel Heights-Cal Water Service (Puc) get its water?
EPA SDWIS lists this system's primary water source as groundwater under influence of surface water. Groundwater under the influence of surface water is well or spring water that the regulator has found to be affected by nearby surface water, so it is regulated under the surface-water treatment rules.
Does Noel Heights-Cal Water Service (Puc) have any drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in September 1984. 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 Noel Heights-Cal Water Service (Puc)'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; none is health-based, and the most recent began in September 1984. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find Noel Heights-Cal Water Service (Puc)'s water quality report?
As a community water system, Noel Heights-Cal Water Service (Puc) 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 |
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, “Noel Heights-Cal Water Service (Puc), PWSID CA4900785, California”, https://aquacensus.com/water-systems/california/noel-heights-cal-water-service-puc-ca4900785 (data as of October 1, 2026).