Public water system · OR4101464
ActiveHidden Meadows Water Assn Inc.
At a glance
Hidden Meadows Water Assn Inc. (PWSID OR4101464) is an active community water system in Yamhill County, Oregon. It reports serving 110 people through 33 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, one is health-based, and the most recent began in December 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
110
Service connections
33
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Hidden Meadows Water Assn Inc. compare with other water systems in Yamhill County?
By EPA's size categories, Hidden Meadows Water Assn Inc. 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 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 Hidden Meadows Water Assn Inc. 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 Hidden Meadows Water Assn Inc.?
EPA lists Hidden Meadows Water Assn Inc. 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 Hidden Meadows Water Assn Inc. have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in December 2025. The violations listed here began between July 2013 and December 2025. By type: 9 monitoring and reporting, 1 public notice, recordkeeping or other, 1 required treatment not met and 1 monitoring. The contaminant or rule involved most often is Lead and Copper Rule (5 of them). EPA lists 9 as resolved, 2 as archived and 1 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. 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. 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 |
|---|---|---|---|---|
| 2025-12-03 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Unaddressed |
| 2025-07-01 | Monitoring and reportingInitial, Follow-up, or Routine Source Water M/R · code 56 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2025-01-01 | Monitoring and reportingInitial, Follow-up, or Routine Source Water M/R · code 56 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2025-01-01 | Monitoring and reportingInitial, Follow-up, or Routine Source Water M/R · code 56 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2024-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2024-10-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Archived |
| 2023-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Archived |
| 2021-12-20 | Required treatment not metTreatment Technique, Level 1 Assessment (RTCR) · code 2A | Revised Total Coliform Rulecode 8000 | Yes | Resolved |
| 2020-05-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2020-01-01 | Monitoring and reportingInitial, Follow-up, or Routine Source Water M/R · code 56 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2013-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | 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.
Hidden Meadows Water Assn Inc.: frequently asked questions
Who runs Hidden Meadows Water Assn Inc.?
Hidden Meadows Water Assn Inc. (PWSID OR4101464) is a community water system privately owned. It is regulated by the OR state drinking water program.
How many people does Hidden Meadows Water Assn Inc. serve?
Hidden Meadows Water Assn Inc. reports serving 110 people through 33 service connections in Yamhill County, Oregon.
Where does Hidden Meadows Water Assn Inc. 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 Hidden Meadows Water Assn Inc. have any drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in December 2025. 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 Hidden Meadows Water Assn Inc.'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, one is health-based, and the most recent began in December 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the OR state drinking water program.
Where can I find Hidden Meadows Water Assn Inc.'s water quality report?
As a community water system, Hidden Meadows Water Assn Inc. 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, “Hidden Meadows Water Assn Inc., PWSID OR4101464, Oregon”, https://aquacensus.com/water-systems/oregon/hidden-meadows-water-assn-inc-or4101464 (data as of October 1, 2026).