Public water system · ID1280093
ActiveHidden Valley Water Assn
At a glance
Hidden Valley Water Assn (PWSID ID1280093) is an active community water system in Kootenai County, Idaho. It reports serving 125 people through 50 service connections. Its primary water source is purchased groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in January 2005.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
125
Service connections
50
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Hidden Valley Water Assn compare with other water systems in Kootenai County?
By EPA's size categories, Hidden Valley 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 less than 0.1% 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 Hidden Valley 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. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own. 11 Idaho systems (0.6%) list purchased groundwater as their primary source.
Who owns and regulates Hidden Valley Water Assn?
EPA lists Hidden Valley 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 Hidden Valley Water Assn have drinking water violations?
Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in January 2005. The violations listed here began between November 1996 and January 2005. By type: 8 monitoring and reporting and 4 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (10 of them). EPA lists 10 as archived and 2 as resolved. 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. 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 |
|---|---|---|---|---|
| 2005-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2005-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2002-02-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 2000-10-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1999-12-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1999-02-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1999-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1998-12-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1998-11-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1998-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1997-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1996-11-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
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.
Hidden Valley Water Assn: frequently asked questions
Who runs Hidden Valley Water Assn?
Hidden Valley Water Assn (PWSID ID1280093) is a community water system privately owned. It is regulated by the ID state drinking water program.
How many people does Hidden Valley Water Assn serve?
Hidden Valley Water Assn reports serving 125 people through 50 service connections in Kootenai County, Idaho.
Where does Hidden Valley Water Assn get its water?
EPA SDWIS lists this system's primary water source as purchased groundwater. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own.
Does Hidden Valley Water Assn have any drinking water violations?
Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in January 2005. 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 Hidden Valley 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, 4 are health-based, and the most recent began in January 2005. For current results, consult the system's annual water quality report, EPA ECHO, or the ID state drinking water program.
Where can I find Hidden Valley Water Assn's water quality report?
As a community water system, Hidden Valley 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, “Hidden Valley Water Assn, PWSID ID1280093, Idaho”, https://aquacensus.com/water-systems/idaho/hidden-valley-water-assn-id1280093 (data as of October 1, 2026).