Public water system · OR4100562
ActiveChehalem Mtn Sun Ridge Water Co
At a glance
Chehalem Mtn Sun Ridge Water Co (PWSID OR4100562) is an active community water system in Yamhill County, Oregon. It reports serving 70 people through 25 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in December 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
70
Service connections
25
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Chehalem Mtn Sun Ridge Water Co compare with other water systems in Yamhill County?
By EPA's size categories, Chehalem Mtn Sun Ridge Water Co is a very small system (500 people or fewer). Yamhill County has 91 active public water systems. Its population served is well below the county average of 998 people per system, and accounts for less than 0.1% of the 90,787 people reported by systems filed under the county. Across Oregon, the 2,536 active systems average 1,587 people each. Nationally, the average active community water system reports serving 6,703 people, so Chehalem Mtn Sun Ridge Water Co 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. Oregon has 940 active community water systems, 37% of the state's 2,536 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 2,175 Oregon systems (86%) list groundwater as their primary source.
Who owns and regulates Chehalem Mtn Sun Ridge Water Co?
EPA lists Chehalem Mtn Sun Ridge Water Co as privately owned. The OR state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 71 of the 91 active systems in Yamhill County (78%) are also privately owned.
Does Chehalem Mtn Sun Ridge Water Co have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in December 2024. The violations listed here began between January 2005 and December 2024. By type: 10 monitoring and reporting and 2 public notice, recordkeeping or other. The contaminant or rule involved most often is Lead and Copper Rule (5 of them). EPA lists 11 as resolved and 1 as archived. 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. 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 |
|---|---|---|---|---|
| 2024-12-08 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2024-10-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2023-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2021-01-01 | Monitoring and reportingInitial, Follow-up, or Routine Source Water M/R · code 56 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2020-07-01 | Monitoring and reportingInitial, Follow-up, or Routine Source Water M/R · code 56 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2020-07-01 | Monitoring and reportingInitial, Follow-up, or Routine Source Water M/R · code 56 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2020-07-01 | Monitoring and reportingInitial, Follow-up, or Routine Source Water M/R · code 56 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2020-07-01 | Monitoring and reportingInitial, Follow-up, or Routine Source Water M/R · code 56 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Uraniumcode 4006 | No | Archived |
| 2005-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1,1-Trichloroethanecode 2981 | No | Resolved |
| 2005-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chlordanecode 2959 | No | Resolved |
| 2005-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2,4-Trichlorobenzenecode 2378 | No | Resolved |
The 12 most recent 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.
Chehalem Mtn Sun Ridge Water Co: frequently asked questions
Who runs Chehalem Mtn Sun Ridge Water Co?
Chehalem Mtn Sun Ridge Water Co (PWSID OR4100562) is a community water system privately owned. It is regulated by the OR state drinking water program.
How many people does Chehalem Mtn Sun Ridge Water Co serve?
Chehalem Mtn Sun Ridge Water Co reports serving 70 people through 25 service connections in Yamhill County, Oregon.
Where does Chehalem Mtn Sun Ridge Water Co 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 Chehalem Mtn Sun Ridge Water Co have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in December 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 Chehalem Mtn Sun Ridge Water Co'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. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in December 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the OR state drinking water program.
Where can I find Chehalem Mtn Sun Ridge Water Co's water quality report?
As a community water system, Chehalem Mtn Sun Ridge Water Co 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 Yamhill County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Mcminnville Water & Light | Yamhill | 34,515 | Community | Surface water |
| Newberg, City of | Yamhill | 25,138 | Community | Groundwater |
| Sheridan, City of | Yamhill | 6,494 | Community | Surface water |
| Lafayette, City of | Yamhill | 4,423 | Community | Purchased surface water |
| Dundee, City of | Yamhill | 2,960 | Community | Groundwater |
| Dayton, City of | Yamhill | 2,535 | 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, “Chehalem Mtn Sun Ridge Water Co, PWSID OR4100562, Oregon”, https://aquacensus.com/water-systems/oregon/chehalem-mtn-sun-ridge-water-co-or4100562 (data as of October 1, 2026).