Public water system · ID4080025
ActiveIdaho City Water Dept
At a glance
Idaho City Water Dept (PWSID ID4080025) is an active community water system in Boise County, Idaho. It reports serving 531 people through 283 service connections. Its primary water source is surface water, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, 7 are health-based, and the most recent began in April 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
531
Service connections
283
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Idaho City Water Dept compare with other water systems in Boise County?
By EPA's size categories, Idaho City Water Dept is a small system (501 to 3,300 people). Boise County has 55 active public water systems, and Idaho City Water Dept is the 4th-largest of them by population served. Its population served is about 3.9 times the county average of 135 people per system, and accounts for 7.1% 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 Idaho City Water Dept 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. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 66 Idaho systems (3.4%) list surface water as their primary source.
Who owns and regulates Idaho City Water Dept?
EPA lists Idaho City Water Dept 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 Idaho City Water Dept have drinking water violations?
Of the 12 most recent violations in EPA's records, 7 are health-based, and the most recent began in April 2023. The violations listed here began between June 2018 and April 2023. By type: 7 required treatment not met and 5 monitoring and reporting. The contaminant or rule involved most often is Interim Enhanced Surface Water Treatment Rule (7 of them). EPA lists 10 as resolved and 2 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 |
|---|---|---|---|---|
| 2023-04-01 | Required treatment not metMonthly Turbidity Exceed (Enhanced SWTR) · code 44 | Interim Enhanced Surface Water Treatment Rulecode 0300 | Yes | Resolved |
| 2022-05-01 | Required treatment not metMonthly Turbidity Exceed (Enhanced SWTR) · code 44 | Interim Enhanced Surface Water Treatment Rulecode 0300 | Yes | Resolved |
| 2022-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Cyanidecode 1024 | No | Resolved |
| 2020-02-01 | Required treatment not metMonthly Turbidity Exceed (Enhanced SWTR) · code 44 | Interim Enhanced Surface Water Treatment Rulecode 0300 | Yes | Resolved |
| 2020-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-226code 4020 | No | Archived |
| 2020-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-228code 4030 | No | Archived |
| 2019-07-01 | Monitoring and reportingMonitoring, Turbidity (Enhanced SWTR) · code 38 | Interim Enhanced Surface Water Treatment Rulecode 0300 | No | Resolved |
| 2019-04-01 | Required treatment not metMonthly Turbidity Exceed (Enhanced SWTR) · code 44 | Interim Enhanced Surface Water Treatment Rulecode 0300 | Yes | Resolved |
| 2019-04-01 | Required treatment not metSingle Turbidity Exceed (Enhanced SWTR) · code 43 | Interim Enhanced Surface Water Treatment Rulecode 0300 | Yes | Resolved |
| 2019-03-01 | Required treatment not metSingle Turbidity Exceed (Enhanced SWTR) · code 43 | Interim Enhanced Surface Water Treatment Rulecode 0300 | Yes | Resolved |
| 2019-03-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2018-06-01 | Monitoring and reportingMonitoring, Source Water (LT2) · code 32 | E. colicode 3014 | 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.
Idaho City Water Dept: frequently asked questions
Who runs Idaho City Water Dept?
Idaho City Water Dept (PWSID ID4080025) is a community water system privately owned. It is regulated by the ID state drinking water program.
How many people does Idaho City Water Dept serve?
Idaho City Water Dept reports serving 531 people through 283 service connections in Boise County, Idaho.
Where does Idaho City Water Dept get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Idaho City Water Dept have any drinking water violations?
Of the 12 most recent violations in EPA's records, 7 are health-based, and the most recent began in April 2023. 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 Idaho City Water Dept'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, 7 are health-based, and the most recent began in April 2023. For current results, consult the system's annual water quality report, EPA ECHO, or the ID state drinking water program.
Where can I find Idaho City Water Dept's water quality report?
As a community water system, Idaho City Water Dept 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 |
| Wilderness Ranch Owners Association Inc. | Boise | 525 | Community | Surface water |
| Terrace Lakes Water Company | Boise | 475 | Community | Groundwater |
| Scriver Woods Homeowners Assn | Boise | 310 | 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, “Idaho City Water Dept, PWSID ID4080025, Idaho”, https://aquacensus.com/water-systems/idaho/idaho-city-water-dept-id4080025 (data as of October 1, 2026).