Public water system · OR4106204
ActiveKnife River Materials - Central Oregon
At a glance
Knife River Materials - Central Oregon (PWSID OR4106204) is an active non-transient non-community water system in Deschutes County, Oregon. It reports serving 60 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list one violation for this system; it is not health-based, and the most recent began in October 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
60
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Knife River Materials - Central Oregon compare with other water systems in Deschutes County?
By EPA's size categories, Knife River Materials - Central Oregon is a very small system (500 people or fewer). Deschutes County has 135 active public water systems. Its population served is well below the county average of 1,515 people per system, and accounts for less than 0.1% of the 204,467 people reported by systems filed under the county. Across Oregon, the 2,536 active systems average 1,587 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Knife River Materials - Central Oregon is well below that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. Oregon has 346 active non-transient non-community water systems, 14% 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 Knife River Materials - Central Oregon?
EPA lists Knife River Materials - Central Oregon as owned by a local government. 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. 14 of the 135 active systems in Deschutes County (10%) are also owned by a local government.
Does Knife River Materials - Central Oregon have drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in October 2025. By type: 1 monitoring and reporting. The contaminant or rule involved is Lead and Copper Rule. EPA lists 1 as unaddressed. 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 |
|---|---|---|---|---|
| 2025-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Unaddressed |
The one violation in EPA's records.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.
Knife River Materials - Central Oregon: frequently asked questions
Who runs Knife River Materials - Central Oregon?
Knife River Materials - Central Oregon (PWSID OR4106204) is a non-transient non-community water system owned by a local government. It is regulated by the OR state drinking water program.
How many people does Knife River Materials - Central Oregon serve?
Knife River Materials - Central Oregon reports serving 60 people through 1 service connection in Deschutes County, Oregon.
Where does Knife River Materials - Central Oregon 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 Knife River Materials - Central Oregon have any drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in October 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 Knife River Materials - Central Oregon'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 one violation for this system; it is not health-based, and the most recent began in October 2025. For current results, consult EPA ECHO, or the OR state drinking water program.
Where can I find Knife River Materials - Central Oregon's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Knife River Materials - Central Oregon is a non-transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
Other water systems in Deschutes County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Bend, City of | Deschutes | 77,704 | Community | Surface water |
| Redmond Water Department | Deschutes | 37,566 | Community | Groundwater |
| Avion Wc - Greater Avion | Deschutes | 35,332 | Community | Groundwater |
| Roats Water System | Deschutes | 6,469 | Community | Groundwater |
| Sunriver Water LLC/Sunriver Utilities | Deschutes | 4,300 | Community | Groundwater |
| Sisters, City of | Deschutes | 3,778 | 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, “Knife River Materials - Central Oregon, PWSID OR4106204, Oregon”, https://aquacensus.com/water-systems/oregon/knife-river-materials-central-oregon-or4106204 (data as of October 1, 2026).