Public water system · OR4194718
ActiveChemical Waste Mgt of Nw Inc.
At a glance
Chemical Waste Mgt of Nw Inc. (PWSID OR4194718) is an active non-transient non-community water system in Gilliam County, Oregon. It reports serving 40 people through 6 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 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
40
Service connections
6
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Chemical Waste Mgt of Nw Inc. compare with other water systems in Gilliam County?
By EPA's size categories, Chemical Waste Mgt of Nw Inc. is a very small system (500 people or fewer). Gilliam County has 6 active public water systems, and Chemical Waste Mgt of Nw Inc. is the 5th-largest of them by population served. Its population served is well below the county average of 265 people per system, and accounts for 2.5% of the 1,588 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 Chemical Waste Mgt of Nw Inc. 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 Chemical Waste Mgt of Nw Inc.?
EPA lists Chemical Waste Mgt of Nw 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. 3 of the 6 active systems in Gilliam County (50%) are also privately owned.
Does Chemical Waste Mgt of Nw Inc. 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 2025. The violations listed here began between September 2009 and December 2025. By type: 6 monitoring and 6 monitoring and reporting. The contaminant or rule involved most often is Revised Total Coliform Rule (6 of them). EPA lists 11 as resolved 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. 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 |
|---|---|---|---|---|
| 2025-12-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2025-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2025-10-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2025-09-27 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Unaddressed |
| 2024-12-08 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2024-12-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-10-26 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2024-08-01 | MonitoringMonitoring, Additional Routine (RTCR) · code 3B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-07-06 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2024-07-01 | MonitoringMonitoring, Additional Routine (RTCR) · code 3B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2015-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2009-09-01 | 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.
Chemical Waste Mgt of Nw Inc.: frequently asked questions
Who runs Chemical Waste Mgt of Nw Inc.?
Chemical Waste Mgt of Nw Inc. (PWSID OR4194718) is a non-transient non-community water system privately owned. It is regulated by the OR state drinking water program.
How many people does Chemical Waste Mgt of Nw Inc. serve?
Chemical Waste Mgt of Nw Inc. reports serving 40 people through 6 service connections in Gilliam County, Oregon.
Where does Chemical Waste Mgt of Nw 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 Chemical Waste Mgt of Nw Inc. 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 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 Chemical Waste Mgt of Nw 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, none is health-based, and the most recent began in December 2025. For current results, consult EPA ECHO, or the OR state drinking water program.
Where can I find Chemical Waste Mgt of Nw Inc.'s water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Chemical Waste Mgt of Nw Inc. 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 Gilliam County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Condon, City of | Gilliam | 742 | Community | Groundwater |
| Arlington City Water Supply | Gilliam | 628 | Community | Groundwater |
| Columbia Ridge Landfill/Recycl | Gilliam | 80 | Non-transient non-community | Groundwater |
| Usace Philippi Park | Gilliam | 65 | Transient non-community | Groundwater |
| Condon Heights Ws | Gilliam | 33 | 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, “Chemical Waste Mgt of Nw Inc., PWSID OR4194718, Oregon”, https://aquacensus.com/water-systems/oregon/chemical-waste-mgt-of-nw-inc-or4194718 (data as of October 1, 2026).