Public water system · OR4100338
ActiveGrand Ronde Community Wtr Assn
At a glance
Grand Ronde Community Wtr Assn (PWSID OR4100338) is an active community water system in Polk County, Oregon. It reports serving 2,500 people through 1,004 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 July 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,500
Service connections
1,004
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Grand Ronde Community Wtr Assn compare with other water systems in Polk County?
By EPA's size categories, Grand Ronde Community Wtr Assn is a small system (501 to 3,300 people). Polk County has 29 active public water systems, and Grand Ronde Community Wtr Assn is the 6th-largest of them by population served. Its population served is about 35% above the county average of 1,851 people per system, and accounts for 4.7% of the 53,687 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 Grand Ronde Community Wtr Assn is about 63% 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 Grand Ronde Community Wtr Assn?
EPA lists Grand Ronde Community Wtr Assn 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. 20 of the 29 active systems in Polk County (69%) are also privately owned.
Does Grand Ronde Community Wtr Assn have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2024. The violations listed here began between October 2016 and July 2024. By type: 10 monitoring and reporting, 1 public notice, recordkeeping or other and 1 monitoring. The contaminant or rule involved most often is E. coli (4 of them). EPA lists 12 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 |
|---|---|---|---|---|
| 2024-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2023-01-02 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2021-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Radium (-226 and -228)code 4010 | No | Resolved |
| 2021-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Resolved |
| 2021-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Uraniumcode 4006 | No | Resolved |
| 2020-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Resolved |
| 2020-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Radium (-226 and -228)code 4010 | No | Resolved |
| 2020-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Uraniumcode 4006 | No | Resolved |
| 2018-11-13 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2017-12-13 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2016-10-15 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2016-10-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | 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.
Grand Ronde Community Wtr Assn: frequently asked questions
Who runs Grand Ronde Community Wtr Assn?
Grand Ronde Community Wtr Assn (PWSID OR4100338) is a community water system privately owned. It is regulated by the OR state drinking water program.
How many people does Grand Ronde Community Wtr Assn serve?
Grand Ronde Community Wtr Assn reports serving 2,500 people through 1,004 service connections in Polk County, Oregon.
Where does Grand Ronde Community Wtr Assn 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 Grand Ronde Community Wtr Assn 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 July 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 Grand Ronde Community Wtr Assn'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 July 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 Grand Ronde Community Wtr Assn's water quality report?
As a community water system, Grand Ronde Community Wtr Assn 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 Polk County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Dallas, City of | Polk | 17,911 | Community | Surface water |
| Monmouth, City of | Polk | 11,651 | Community | Groundwater under influence of surface water |
| Independence Water System | Polk | 10,300 | Community | Groundwater |
| Luckiamute Domestic Water Coop | Polk | 2,738 | Community | Purchased surface water |
| Perrydale Domestic Wtr Assn | Polk | 2,655 | Community | Groundwater |
| Rickreall Water Association | Polk | 1,650 | 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, “Grand Ronde Community Wtr Assn, PWSID OR4100338, Oregon”, https://aquacensus.com/water-systems/oregon/grand-ronde-community-wtr-assn-or4100338 (data as of October 1, 2026).