Public water system · ID5070051
ActiveSun Valley Water and Sewer Dist
At a glance
Sun Valley Water and Sewer Dist (PWSID ID5070051) is an active community water system in Blaine County, Idaho. It reports serving 3,400 people through 1,096 service connections. Its primary water source is groundwater, and EPA lists it as under public/private ownership. Of the 12 most recent violations in EPA's records, none is 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
3,400
Service connections
1,096
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Sun Valley Water and Sewer Dist compare with other water systems in Blaine County?
By EPA's size categories, Sun Valley Water and Sewer Dist is a medium system (3,301 to 10,000 people). Blaine County has 43 active public water systems, and Sun Valley Water and Sewer Dist is the 3rd-largest of them by population served. Its population served is about 6.2 times the county average of 552 people per system, and accounts for 14% of the 23,727 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 Sun Valley Water and Sewer Dist is about half of 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 Sun Valley Water and Sewer Dist?
EPA lists Sun Valley Water and Sewer Dist as under public/private ownership. 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. 2 of the 43 active systems in Blaine County (4.7%) are also under public/private ownership.
Does Sun Valley Water and Sewer Dist have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2025. The violations listed here began between December 2022 and July 2025. By type: 11 monitoring and reporting and 1 reporting. The contaminant or rule involved most often is Gross alpha (excluding radon and uranium) (2 of them). EPA lists 9 as resolved, 2 as archived and 1 as unaddressed. 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. 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 |
|---|---|---|---|---|
| 2025-07-02 | ReportingNotification, Known or Potential LSL · code 4H | Lead and Copper Rule Revisionscode 5200 | No | Unaddressed |
| 2025-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Archived |
| 2025-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Archived |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-226code 4020 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-228code 4030 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Uraniumcode 4006 | No | Resolved |
| 2023-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-226code 4020 | No | Resolved |
| 2023-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Resolved |
| 2023-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Uraniumcode 4006 | No | Resolved |
| 2023-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-228code 4030 | No | Resolved |
| 2022-12-30 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | 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.
Sun Valley Water and Sewer Dist: frequently asked questions
Who runs Sun Valley Water and Sewer Dist?
Sun Valley Water and Sewer Dist (PWSID ID5070051) is a community water system under public/private ownership. It is regulated by the ID state drinking water program.
How many people does Sun Valley Water and Sewer Dist serve?
Sun Valley Water and Sewer Dist reports serving 3,400 people through 1,096 service connections in Blaine County, Idaho.
Where does Sun Valley Water and Sewer Dist 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 Sun Valley Water and Sewer Dist 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 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 Sun Valley Water and Sewer Dist'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 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 Sun Valley Water and Sewer Dist's water quality report?
As a community water system, Sun Valley Water and Sewer Dist 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 Blaine County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Hailey Water and Sewer | Blaine | 8,000 | Community | Groundwater |
| Ketchum City of | Blaine | 3,555 | Community | Groundwater |
| Bellevue City of | Blaine | 2,747 | Community | Groundwater |
| Bald Mountain | Blaine | 1,000 | Transient non-community | Groundwater |
| Carey Water and Sewer | Blaine | 993 | Community | Groundwater |
| Mid Valley Water Company LLC | Blaine | 450 | 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, “Sun Valley Water and Sewer Dist, PWSID ID5070051, Idaho”, https://aquacensus.com/water-systems/idaho/sun-valley-water-and-sewer-dist-id5070051 (data as of October 1, 2026).