Public water system · ID2250032
ActiveKooskia Water Dept
At a glance
Kooskia Water Dept (PWSID ID2250032) is an active community water system in Idaho County, Idaho. It reports serving 607 people through 417 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 9 violations for this system; 5 are health-based, and the most recent began in November 2022.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
607
Service connections
417
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Kooskia Water Dept compare with other water systems in Idaho County?
By EPA's size categories, Kooskia Water Dept is a small system (501 to 3,300 people). Idaho County has 54 active public water systems, and Kooskia Water Dept is the 3rd-largest of them by population served. Its population served is about 3.3 times the county average of 185 people per system, and accounts for 6.1% of the 9,970 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 Kooskia 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. 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 Kooskia Water Dept?
EPA lists Kooskia Water Dept as owned by a local government. 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. 9 of the 54 active systems in Idaho County (17%) are also owned by a local government.
Does Kooskia Water Dept have drinking water violations?
EPA's records list 9 violations for this system; 5 are health-based, and the most recent began in November 2022. The violations listed here began between October 1979 and November 2022. By type: 5 contaminant level above the legal limit and 4 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (7 of them). EPA lists 7 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 |
|---|---|---|---|---|
| 2022-11-02 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2016-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1995-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1994-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1993-06-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1993-06-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1992-05-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1991-05-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1979-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Archived |
All 9 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.
Kooskia Water Dept: frequently asked questions
Who runs Kooskia Water Dept?
Kooskia Water Dept (PWSID ID2250032) is a community water system owned by a local government. It is regulated by the ID state drinking water program.
How many people does Kooskia Water Dept serve?
Kooskia Water Dept reports serving 607 people through 417 service connections in Idaho County, Idaho.
Where does Kooskia Water Dept 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 Kooskia Water Dept have any drinking water violations?
EPA's records list 9 violations for this system; 5 are health-based, and the most recent began in November 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 Kooskia 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. EPA's records list 9 violations for this system; 5 are health-based, and the most recent began in November 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 Kooskia Water Dept's water quality report?
As a community water system, Kooskia 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 Idaho County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Grangeville Water Dept | Idaho | 3,151 | Community | Groundwater |
| Cottonwood Water Dept | Idaho | 977 | Community | Groundwater |
| Riggins City of | Idaho | 434 | Community | Groundwater |
| Idoc North Idaho Correctional Institute | Idaho | 425 | Community | Groundwater |
| Pine Ridge Water and Sewer Dist | Idaho | 390 | Community | Purchased surface water |
| Elk City Water and Sewer Assn | Idaho | 320 | Community | Surface water |
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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, “Kooskia Water Dept, PWSID ID2250032, Idaho”, https://aquacensus.com/water-systems/idaho/kooskia-water-dept-id2250032 (data as of October 1, 2026).