Public water system · ID2250017
ActiveElk City Water and Sewer Assn
At a glance
Elk City Water and Sewer Assn (PWSID ID2250017) is an active community water system in Idaho County, Idaho. It reports serving 320 people through 145 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, 8 are health-based, and the most recent began in July 2025.
This page covers its drinking water system only; sewer and wastewater service are not part of EPA's drinking water records.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
320
Service connections
145
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Elk City Water and Sewer Assn compare with other water systems in Idaho County?
By EPA's size categories, Elk City Water and Sewer Assn is a very small system (500 people or fewer). Idaho County has 54 active public water systems. Its population served is about 73% above the county average of 185 people per system, and accounts for 3.2% 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 Elk City Water and Sewer 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. 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 Elk City Water and Sewer Assn?
EPA lists Elk City Water and Sewer 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. 27 of the 54 active systems in Idaho County (50%) are also privately owned.
Does Elk City Water and Sewer Assn have drinking water violations?
Of the 12 most recent violations in EPA's records, 8 are health-based, and the most recent began in July 2025. The violations listed here began between July 2021 and July 2025. By type: 8 required treatment not met and 4 monitoring and reporting. The contaminant or rule involved most often is Carbon, total (10 of them). EPA lists 9 as resolved and 3 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 |
|---|---|---|---|---|
| 2025-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Archived |
| 2025-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Archived |
| 2023-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Carbon, totalcode 2920 | No | Resolved |
| 2023-07-01 | Required treatment not metTreatment Technique Precursor Removal · code 46 | Carbon, totalcode 2920 | Yes | Resolved |
| 2023-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Carbon, totalcode 2920 | No | Resolved |
| 2023-04-01 | Required treatment not metTreatment Technique Precursor Removal · code 46 | Carbon, totalcode 2920 | Yes | Resolved |
| 2023-01-01 | Required treatment not metTreatment Technique Precursor Removal · code 46 | Carbon, totalcode 2920 | Yes | Resolved |
| 2022-10-01 | Required treatment not metTreatment Technique Precursor Removal · code 46 | Carbon, totalcode 2920 | Yes | Resolved |
| 2022-01-01 | Required treatment not metTreatment Technique Precursor Removal · code 46 | Carbon, totalcode 2920 | Yes | Resolved |
| 2021-10-01 | Required treatment not metTreatment Technique Precursor Removal · code 46 | Carbon, totalcode 2920 | Yes | Resolved |
| 2021-07-01 | Required treatment not metTreatment Technique Precursor Removal · code 46 | Carbon, totalcode 2920 | Yes | Resolved |
| 2021-07-01 | Required treatment not metTreatment Technique Precursor Removal · code 46 | Carbon, totalcode 2920 | Yes | 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.
Elk City Water and Sewer Assn: frequently asked questions
Who runs Elk City Water and Sewer Assn?
Elk City Water and Sewer Assn (PWSID ID2250017) is a community water system privately owned. It is regulated by the ID state drinking water program.
How many people does Elk City Water and Sewer Assn serve?
Elk City Water and Sewer Assn reports serving 320 people through 145 service connections in Idaho County, Idaho.
Where does Elk City Water and Sewer Assn 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 Elk City Water and Sewer Assn have any drinking water violations?
Of the 12 most recent violations in EPA's records, 8 are health-based, and the most recent began in July 2025. 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 Elk City Water and Sewer 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, 8 are health-based, and the most recent began in July 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the ID state drinking water program.
Where can I find Elk City Water and Sewer Assn's water quality report?
As a community water system, Elk City Water and Sewer 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 Idaho County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Grangeville Water Dept | Idaho | 3,151 | Community | Groundwater |
| Cottonwood Water Dept | Idaho | 977 | Community | Groundwater |
| Kooskia Water Dept | Idaho | 607 | 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 |
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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, “Elk City Water and Sewer Assn, PWSID ID2250017, Idaho”, https://aquacensus.com/water-systems/idaho/elk-city-water-and-sewer-assn-id2250017 (data as of October 1, 2026).