Public water system · OR4101090

Active

Usfs Silver Lake Rs

At a glance

Usfs Silver Lake Rs (PWSID OR4101090) is an active transient non-community water system in Lake County, Oregon. It reports serving 30 people through 15 service connections. Its primary water source is groundwater, and EPA lists it as owned by the federal government. Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in March 2026.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO public records.

Population served

Service connections

Primary source

Groundwater

System type

TNCWS

Transient non-community water system

System record

PWSIDOR4101090

System typeTransient non-community water system

Activity statusActive

Population served30

Service connections15

Primary water sourceGroundwater

Owner typeFederal government

Primacy agencyOR state drinking water program

City served—

StateOregon

ZIP—

CountyLake County

How does Usfs Silver Lake Rs compare with other water systems in Lake County?

By EPA's size categories, Usfs Silver Lake Rs is a very small system (500 people or fewer). Lake County has 19 active public water systems. Its population served is well below the county average of 250 people per system, and accounts for 0.6% of the 4,753 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 Silver Lake Rs is well below 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 Silver Lake Rs?

EPA lists Usfs Silver Lake Rs 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. 2 of the 19 active systems in Lake County (11%) are also owned by the federal government.

Does Usfs Silver Lake Rs have drinking water violations?

Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in March 2026. The violations listed here began between May 2011 and March 2026. By type: 4 monitoring, 4 monitoring and reporting, 2 public notice, recordkeeping or other and 2 contaminant level above the legal limit. The contaminant or rule involved most often is Revised Total Coliform Rule (5 of them). EPA lists 9 as resolved, 2 as archived 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. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status. 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
2026-03-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Archived
2026-02-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Archived
2025-10-08	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2025-09-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, E. coli (RTCR) · code 1A	Revised Total Coliform Rulecode 8000	Yes	Resolved
2022-09-01	MonitoringMonitoring, Additional Routine (RTCR) · code 3B	Revised Total Coliform Rulecode 8000	No	Resolved
2020-01-01	MonitoringMonitoring, Additional Routine (RTCR) · code 3B	Revised Total Coliform Rulecode 8000	No	Resolved
2013-01-01	Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52	Lead and Copper Rulecode 5000	No	Resolved
2011-12-23	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2011-11-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved
2011-10-01	Monitoring and reportingMonitoring, Source Water (GWR) · code 34	E. colicode 3014	No	Unaddressed
2011-10-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
2011-05-01	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.

Usfs Silver Lake Rs: frequently asked questions

Who runs Usfs Silver Lake Rs?

Usfs Silver Lake Rs (PWSID OR4101090) 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 Silver Lake Rs serve?

Usfs Silver Lake Rs reports serving 30 people through 15 service connections in Lake County, Oregon.

Where does Usfs Silver Lake Rs 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 Silver Lake Rs have any drinking water violations?

Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in March 2026. 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 Silver Lake Rs' 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, 2 are health-based, and the most recent began in March 2026. For current results, consult EPA ECHO, or the OR state drinking water program.

Where can I find Usfs Silver Lake Rs' water quality report?

The annual Consumer Confidence Report requirement applies to community water systems. Usfs Silver Lake Rs 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 Lake County

Water system	County	Population served	Type	Source
Lakeview, City of	Lake	2,476	Community	Groundwater
Christmas Valley Domestic Ws	Lake	950	Community	Groundwater
North Lake School Sd 14	Lake	260	Non-transient non-community	Groundwater
Paisley, City of	Lake	245	Community	Groundwater
Oprd Goose Lake Recreation	Lake	150	Transient non-community	Groundwater
Westwind Mobile Home Park	Lake	104	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 Silver Lake Rs, PWSID OR4101090, Oregon”, https://aquacensus.com/water-systems/oregon/usfs-silver-lake-rs-or4101090 (data as of October 1, 2026).