Public water system · ID1280161
ActiveRose Lake Water Assn
At a glance
Rose Lake Water Assn (PWSID ID1280161) is an active community water system in Kootenai County, Idaho. It reports serving 300 people through 120 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, 3 are health-based, and the most recent began in June 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
300
Service connections
120
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Rose Lake Water Assn compare with other water systems in Kootenai County?
By EPA's size categories, Rose Lake Water Assn is a very small system (500 people or fewer). Kootenai County has 182 active public water systems. Its population served is well below the county average of 983 people per system, and accounts for 0.2% of the 178,930 people reported by systems filed under the county. Across Idaho, the 1,961 active systems average 899 people each. Nationally, the average active community water system reports serving 6,703 people, so Rose Lake Water Assn 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. Idaho has 765 active community water systems, 39% of the state's 1,961 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,861 Idaho systems (95%) list groundwater as their primary source.
Who owns and regulates Rose Lake Water Assn?
EPA lists Rose Lake Water Assn as privately owned. The ID state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 123 of the 182 active systems in Kootenai County (68%) are also privately owned.
Does Rose Lake Water Assn have drinking water violations?
Of the 12 most recent violations in EPA's records, 3 are health-based, and the most recent began in June 2025. The violations listed here began between November 2012 and June 2025. By type: 8 monitoring and reporting, 2 contaminant level above the legal limit, 1 required treatment not met and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Chlorine (2 of them). EPA lists 7 as resolved and 5 as archived. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-06-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2020-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Archived |
| 2020-03-31 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2019-09-29 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2018-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Archived |
| 2018-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Archived |
| 2018-08-02 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2018-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-226code 4020 | No | Archived |
| 2018-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-228code 4030 | No | Archived |
| 2015-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 2015-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 2012-11-01 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | 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.
Rose Lake Water Assn: frequently asked questions
Who runs Rose Lake Water Assn?
Rose Lake Water Assn (PWSID ID1280161) is a community water system privately owned. It is regulated by the ID state drinking water program.
How many people does Rose Lake Water Assn serve?
Rose Lake Water Assn reports serving 300 people through 120 service connections in Kootenai County, Idaho.
Where does Rose Lake Water Assn 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 Rose Lake Water Assn have any drinking water violations?
Of the 12 most recent violations in EPA's records, 3 are health-based, and the most recent began in June 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 Rose Lake Water Assn'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, 3 are health-based, and the most recent began in June 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the ID state drinking water program.
Where can I find Rose Lake Water Assn's water quality report?
As a community water system, Rose Lake Water Assn 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 Kootenai County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Coeur D Alene City of | Kootenai | 54,115 | Community | Groundwater |
| Post Falls City of | Kootenai | 20,285 | Community | Groundwater |
| East Greenacres Irrigation Dist | Kootenai | 11,165 | Community | Groundwater |
| Rathdrum City of | Kootenai | 10,358 | Community | Groundwater |
| Hayden Lake Irrigation Dist | Kootenai | 9,375 | Community | Groundwater |
| Ross Point Water Dist | Kootenai | 8,965 | 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, “Rose Lake Water Assn, PWSID ID1280161, Idaho”, https://aquacensus.com/water-systems/idaho/rose-lake-water-assn-id1280161 (data as of October 1, 2026).