Public water system · OR4192758
ActiveUsfs Diamond Lake Rec Area
At a glance
Usfs Diamond Lake Rec Area (PWSID OR4192758) is an active transient non-community water system in Douglas County, Oregon. It reports serving 617 people through 6 service connections. Its primary water source is groundwater, and EPA lists it as owned by the federal government. EPA's records list 6 violations for this system; none is health-based, and the most recent began in April 2022.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
617
Service connections
6
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Usfs Diamond Lake Rec Area compare with other water systems in Douglas County?
By EPA's size categories, Usfs Diamond Lake Rec Area is a small system (501 to 3,300 people). Douglas County has 102 active public water systems. Its population served is about 33% below the county average of 916 people per system, and accounts for 0.7% of the 93,402 people reported by systems filed under the county. Across Oregon, the 2,536 active systems average 1,587 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Usfs Diamond Lake Rec Area is about 4.3 times that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. Oregon has 1,250 active transient non-community water systems, 49% 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 Usfs Diamond Lake Rec Area?
EPA lists Usfs Diamond Lake Rec Area as owned by the federal 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. 19 of the 102 active systems in Douglas County (19%) are also owned by the federal government.
Does Usfs Diamond Lake Rec Area have drinking water violations?
EPA's records list 6 violations for this system; none is health-based, and the most recent began in April 2022. The violations listed here began between October 1998 and April 2022. By type: 5 monitoring and reporting and 1 monitoring. The contaminant or rule involved most often is Nitrate (3 of them). EPA lists 6 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 |
|---|---|---|---|---|
| 2022-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2015-08-19 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2015-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2008-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2004-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1998-10-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 6 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.
Usfs Diamond Lake Rec Area: frequently asked questions
Who runs Usfs Diamond Lake Rec Area?
Usfs Diamond Lake Rec Area (PWSID OR4192758) is a transient non-community water system owned by the federal government. It is regulated by the OR state drinking water program.
How many people does Usfs Diamond Lake Rec Area serve?
Usfs Diamond Lake Rec Area reports serving 617 people through 6 service connections in Douglas County, Oregon.
Where does Usfs Diamond Lake Rec Area 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 Usfs Diamond Lake Rec Area have any drinking water violations?
EPA's records list 6 violations for this system; none is health-based, and the most recent began in April 2022. 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 Usfs Diamond Lake Rec Area'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 6 violations for this system; none is health-based, and the most recent began in April 2022. For current results, consult EPA ECHO, or the OR state drinking water program.
Where can I find Usfs Diamond Lake Rec Area's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Usfs Diamond Lake Rec Area is a 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 Douglas County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Roseburg, City of | Douglas | 28,800 | Community | Surface water |
| Umpqua Basin Water Assoc | Douglas | 9,499 | Community | Surface water |
| Winston-Dillard Water District | Douglas | 8,300 | Community | Surface water |
| Sutherlin, City of | Douglas | 8,060 | Community | Surface water |
| Green Area Water & Sanitary Authority | Douglas | 7,000 | Community | Surface water |
| Reedsport, City of | Douglas | 4,836 | 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, “Usfs Diamond Lake Rec Area, PWSID OR4192758, Oregon”, https://aquacensus.com/water-systems/oregon/usfs-diamond-lake-rec-area-or4192758 (data as of October 1, 2026).