Public water system · OR4100602
ActiveGuptil Subdivision
At a glance
Guptil Subdivision (PWSID OR4100602) is an active community water system in Lincoln County, Oregon. It reports serving 79 people through 20 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 June 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
79
Service connections
20
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Guptil Subdivision compare with other water systems in Lincoln County?
By EPA's size categories, Guptil Subdivision is a very small system (500 people or fewer). Lincoln County has 52 active public water systems. Its population served is well below the county average of 1,190 people per system, and accounts for 0.1% of the 61,889 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 Guptil Subdivision 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 Guptil Subdivision?
EPA lists Guptil Subdivision 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. 30 of the 52 active systems in Lincoln County (58%) are also privately owned.
Does Guptil Subdivision have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in June 2024. The violations listed here began between February 2021 and June 2024. By type: 7 monitoring, 2 monitoring and reporting, 2 public notice, recordkeeping or other and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Revised Total Coliform Rule (8 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 |
|---|---|---|---|---|
| 2024-06-17 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2024-05-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-03-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2023-10-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2023-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2023-03-08 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2023-03-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2023-02-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, E. coli (RTCR) · code 1A | Revised Total Coliform Rulecode 8000 | Yes | Resolved |
| 2023-01-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2022-12-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2021-02-01 | 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.
Guptil Subdivision: frequently asked questions
Who runs Guptil Subdivision?
Guptil Subdivision (PWSID OR4100602) is a community water system privately owned. It is regulated by the OR state drinking water program.
How many people does Guptil Subdivision serve?
Guptil Subdivision reports serving 79 people through 20 service connections in Lincoln County, Oregon.
Where does Guptil Subdivision 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 Guptil Subdivision 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 June 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 Guptil Subdivision'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 June 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 Guptil Subdivision's water quality report?
As a community water system, Guptil Subdivision 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 Lincoln County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Lincoln City, City of | Lincoln | 20,830 | Community | Surface water |
| Newport, City of | Lincoln | 10,439 | Community | Surface water |
| Seal Rock Water District | Lincoln | 6,000 | Community | Surface water |
| Kernville-Gleneden-Linc Bch Wd | Lincoln | 5,609 | Community | Surface water |
| Toledo Water Utilities | Lincoln | 3,645 | Community | Surface water |
| Sw Lincoln Co Water PUD | Lincoln | 3,000 | Community | 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, “Guptil Subdivision, PWSID OR4100602, Oregon”, https://aquacensus.com/water-systems/oregon/guptil-subdivision-or4100602 (data as of October 1, 2026).