Public water system · ID3140281
ActiveHorizon Ridge Subdivision
At a glance
Horizon Ridge Subdivision (PWSID ID3140281) is an active community water system in Canyon County, Idaho. It reports serving 75 people through 29 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 2 violations for this system; none is health-based, and the most recent began in January 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
75
Service connections
29
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Horizon Ridge Subdivision compare with other water systems in Canyon County?
By EPA's size categories, Horizon Ridge Subdivision is a very small system (500 people or fewer). Canyon County has 140 active public water systems. Its population served is well below the county average of 1,527 people per system, and accounts for less than 0.1% of the 213,824 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 Horizon Ridge Subdivision 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 Horizon Ridge Subdivision?
EPA lists Horizon Ridge Subdivision 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 140 active systems in Canyon County (88%) are also privately owned.
Does Horizon Ridge Subdivision have drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in January 2026. The violations listed here began between January 2026 and January 2026. By type: 2 monitoring and reporting. The contaminant or rule involved most often is Endothall (2 of them). EPA lists 2 as archived. 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 |
|---|---|---|---|---|
| 2026-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Endothallcode 2033 | No | Archived |
| 2026-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Endothallcode 2033 | No | Archived |
All 2 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.
Horizon Ridge Subdivision: frequently asked questions
Who runs Horizon Ridge Subdivision?
Horizon Ridge Subdivision (PWSID ID3140281) is a community water system privately owned. It is regulated by the ID state drinking water program.
How many people does Horizon Ridge Subdivision serve?
Horizon Ridge Subdivision reports serving 75 people through 29 service connections in Canyon County, Idaho.
Where does Horizon Ridge Subdivision 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 Horizon Ridge Subdivision have any drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in January 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 Horizon Ridge Subdivision'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 2 violations for this system; none is health-based, and the most recent began in January 2026. For current results, consult the system's annual water quality report, EPA ECHO, or the ID state drinking water program.
Where can I find Horizon Ridge Subdivision's water quality report?
As a community water system, Horizon Ridge Subdivision 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 Canyon County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Nampa City of | Canyon | 100,200 | Community | Groundwater |
| Caldwell City of | Canyon | 74,000 | Community | Groundwater |
| Middleton City of | Canyon | 13,190 | Community | Groundwater |
| Parma City of | Canyon | 2,250 | Community | Groundwater |
| Wilder City of | Canyon | 1,690 | Community | Groundwater |
| Caldwell Housing Authority | Canyon | 1,100 | 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, “Horizon Ridge Subdivision, PWSID ID3140281, Idaho”, https://aquacensus.com/water-systems/idaho/horizon-ridge-subdivision-id3140281 (data as of October 1, 2026).