Public water system · 104111101
ActiveCtuir PWD Mission
At a glance
Ctuir PWD Mission (PWSID 104111101) is an active community water system in Oregon. It reports serving 1,310 people through 342 service connections. Its primary water source is groundwater, and EPA lists it as Native American-owned. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in March 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,310
Service connections
342
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Ctuir PWD Mission compare with other water systems in Oregon?
By EPA's size categories, Ctuir PWD Mission is a small system (501 to 3,300 people). 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 Ctuir PWD Mission 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 Ctuir PWD Mission?
EPA lists Ctuir PWD Mission as Native American-owned. The EPA Region 10 is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act.
Does Ctuir PWD Mission have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in March 2025. The violations listed here began between January 2023 and March 2025. By type: 11 monitoring and reporting and 1 required treatment not met. The contaminants or rules involved are Chlorine, Lead and Copper Rule Revisions, 2,3,7,8-TCDD (dioxin) and Lead and Copper Rule. 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 |
|---|---|---|---|---|
| 2025-03-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2024-10-17 | Required treatment not metLSL Inventory · code 2E | Lead and Copper Rule Revisionscode 5200 | Yes | Resolved |
| 2023-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | 2,3,7,8-TCDD (dioxin)code 2063 | No | Resolved |
| 2023-07-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloroethanecode 2980 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | p-Dichlorobenzenecode 2969 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Styrenecode 2996 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Glyphosatecode 2034 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Dichloromethanecode 2964 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Benzenecode 2990 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1-Dichloroethylenecode 2977 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloropropanecode 2983 | 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.
Ctuir PWD Mission: frequently asked questions
Who runs Ctuir PWD Mission?
Ctuir PWD Mission (PWSID 104111101) is a community water system Native American-owned. It is regulated by the EPA Region 10.
How many people does Ctuir PWD Mission serve?
Ctuir PWD Mission reports serving 1,310 people through 342 service connections in Oregon.
Where does Ctuir PWD Mission 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 Ctuir PWD Mission 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 March 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 Ctuir PWD Mission'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 March 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the EPA Region 10.
Where can I find Ctuir PWD Mission's water quality report?
As a community water system, Ctuir PWD Mission 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 Oregon
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Portland Water Bureau | Multnomah | 666,200 | Community | Surface water |
| Tualatin Valley Water District | Washington | 224,600 | Community | Purchased surface water |
| Salem Public Works | Marion | 199,820 | Community | Surface water |
| Eugene Water & Electric Board | Lane | 176,000 | Community | Surface water |
| Medford Water Commission | Jackson | 106,068 | Community | Surface water |
| Hillsboro, City of | Washington | 92,632 | Community | Purchased surface water |
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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, “Ctuir PWD Mission, PWSID 104111101, Oregon”, https://aquacensus.com/water-systems/oregon/ctuir-pwd-mission-104111101 (data as of October 1, 2026).