Public water system · ID4080004
ActiveBoise Holcomb Water Users Assoc. Inc.
At a glance
Boise Holcomb Water Users Assoc. Inc. (PWSID ID4080004) is an active community water system in Boise County, Idaho. It reports serving 36 people through 25 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, none is health-based, and the most recent began in September 2022.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
36
Service connections
25
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Boise Holcomb Water Users Assoc. Inc. compare with other water systems in Boise County?
By EPA's size categories, Boise Holcomb Water Users Assoc. Inc. is a very small system (500 people or fewer). Boise County has 55 active public water systems. Its population served is well below the county average of 135 people per system, and accounts for 0.5% of the 7,448 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 Boise Holcomb Water Users Assoc. Inc. 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 Boise Holcomb Water Users Assoc. Inc.?
EPA lists Boise Holcomb Water Users Assoc. Inc. 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. 49 of the 55 active systems in Boise County (89%) are also privately owned.
Does Boise Holcomb Water Users Assoc. Inc. have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in September 2022. The violations listed here began between April 1993 and September 2022. By type: 11 monitoring and reporting and 1 monitoring. The contaminant or rule involved most often is Total coliform bacteria (TCR) (10 of them). EPA lists 10 as archived, 1 as resolved and 1 as unaddressed. 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. 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 |
|---|---|---|---|---|
| 2022-09-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2010-08-04 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Unaddressed |
| 2005-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 2002-05-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 2001-11-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 2001-08-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 2001-05-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1993-08-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1993-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1993-06-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1993-05-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1993-04-01 | 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.
Boise Holcomb Water Users Assoc. Inc.: frequently asked questions
Who runs Boise Holcomb Water Users Assoc. Inc.?
Boise Holcomb Water Users Assoc. Inc. (PWSID ID4080004) is a community water system privately owned. It is regulated by the ID state drinking water program.
How many people does Boise Holcomb Water Users Assoc. Inc. serve?
Boise Holcomb Water Users Assoc. Inc. reports serving 36 people through 25 service connections in Boise County, Idaho.
Where does Boise Holcomb Water Users Assoc. Inc. 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 Boise Holcomb Water Users Assoc. Inc. have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in September 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 Boise Holcomb Water Users Assoc. Inc.'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, none is health-based, and the most recent began in September 2022. For current results, consult the system's annual water quality report, EPA ECHO, or the ID state drinking water program.
Where can I find Boise Holcomb Water Users Assoc. Inc.'s water quality report?
As a community water system, Boise Holcomb Water Users Assoc. Inc. 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 Boise County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Idpr Lucky Peak Sp Spring Shores | Boise | 780 | Transient non-community | Groundwater |
| Bogus Basin Mtn Resort | Boise | 750 | Non-transient non-community | Surface water |
| Horseshoe Bend Water Supply | Boise | 750 | Community | Surface water |
| Idaho City Water Dept | Boise | 531 | Community | Surface water |
| Wilderness Ranch Owners Association Inc. | Boise | 525 | Community | Surface water |
| Terrace Lakes Water Company | Boise | 475 | 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, “Boise Holcomb Water Users Assoc. Inc., PWSID ID4080004, Idaho”, https://aquacensus.com/water-systems/idaho/boise-holcomb-water-users-assoc-inc-id4080004 (data as of October 1, 2026).