Ketchum Water Quality
Idaho
According to EPA SDWIS, Ketchum, Idaho is served by 10 community water systems covering about 5,104 people. The same extract lists 21 health-based violation records, most recently coded 5200 in 2024. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in Ketchum, Idaho is delivered through 10 EPA-regulated community water systems serving an estimated 5,104 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.
PlainEnviro's health-based SDWIS extract shows 21 violation records across the 10 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 5 distinct EPA contaminant codes: LEAD AND COPPER RULE REVISIONS, Combined Uranium, Revised Total Coliform Rule, Groundwater Rule, Total Haloacetic Acids (HAA5).
A past EPA health-based registry row does not describe water delivered today or current compliance status; utilities notify customers and remediate under state primacy oversight when required. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the Idaho drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.
Community Water Systems
| System Name | Pop. Served | Violations | Status |
|---|---|---|---|
| KETCHUM CITY OF | 3,555 | 0 | Clean |
| HULEN MEADOWS WATER COMPANY | 390 | 0 | Clean |
| COLD SPRINGS SUBD | 300 | 0 | Clean |
| HEATHERLANDS SUBD | 200 | 2 | Health |
| STARWEATHER ESTATES | 150 | 0 | Clean |
| THE VALLEY CLUB | 135 | 0 | Clean |
| GOLDEN EAGLE RANCH | 120 | 3 | Health |
| SMILEY CREEK WATER USERS ASSN INC | 117 | 7 | Health |
| GREENHORN SUBD | 75 | 9 | Health |
| WOODENHILLS WATER WORKS | 62 | 0 | Clean |
Does this city have health-based water violations?
These health-based records can represent Maximum Contaminant Level (MCL), Treatment Technique (TT), or Maximum Residual Disinfectant Level (MRDL) categories. A historical record does not establish that water is currently unsafe.
| Water system | Contaminant | Begin Date |
|---|---|---|
| SMILEY CREEK WATER USERS ASSN INC | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| SMILEY CREEK WATER USERS ASSN INC | Combined Uranium | 2024-01-01 |
| SMILEY CREEK WATER USERS ASSN INC | Combined Uranium | 2024-01-01 |
| SMILEY CREEK WATER USERS ASSN INC | Combined Uranium | 2024-01-01 |
| SMILEY CREEK WATER USERS ASSN INC | Combined Uranium | 2024-01-01 |
| GOLDEN EAGLE RANCH | Revised Total Coliform Rule | 2022-11-24 |
| GOLDEN EAGLE RANCH | Revised Total Coliform Rule | 2022-11-24 |
| GOLDEN EAGLE RANCH | Revised Total Coliform Rule | 2022-11-24 |
| SMILEY CREEK WATER USERS ASSN INC | Groundwater Rule | 2022-01-30 |
| SMILEY CREEK WATER USERS ASSN INC | Groundwater Rule | 2022-01-30 |
| GREENHORN SUBD | Total Haloacetic Acids (HAA5) | 2020-04-01 |
| GREENHORN SUBD | Total Haloacetic Acids (HAA5) | 2020-04-01 |
| GREENHORN SUBD | Total Haloacetic Acids (HAA5) | 2020-01-01 |
| GREENHORN SUBD | Total Haloacetic Acids (HAA5) | 2020-01-01 |
| GREENHORN SUBD | Total Haloacetic Acids (HAA5) | 2019-10-01 |
| GREENHORN SUBD | Total Haloacetic Acids (HAA5) | 2019-10-01 |
| GREENHORN SUBD | Total Haloacetic Acids (HAA5) | 2019-07-01 |
| GREENHORN SUBD | Total Haloacetic Acids (HAA5) | 2019-07-01 |
| HEATHERLANDS SUBD | Groundwater Rule | 2018-03-23 |
| HEATHERLANDS SUBD | Groundwater Rule | 2018-03-23 |
| GREENHORN SUBD | Revised Total Coliform Rule | 2017-07-01 |
What are Ketchum's health-based records for?
Ketchum's health-based violation records carry 5 distinct EPA codes: some name a substance, others the drinking-water rule that was breached. Counts are records on file in the EPA SDWIS extract, not current test results.
| Contaminant | Records | Systems |
|---|---|---|
| Total Haloacetic Acids (HAA5) | 8 | 1 |
| Groundwater Rule | 4 | 2 |
| Revised Total Coliform Rule | 4 | 2 |
| Combined Uranium | 4 | 1 |
| Lead and Copper Rule Revisions | 1 | 1 |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Ketchum, Idaho? ▼
How many water violations does Ketchum have in this EPA extract? ▼
What contaminants were found in Ketchum water? ▼
How many water systems serve Ketchum? ▼
Where does Ketchum get its drinking water? ▼
How does Ketchum compare in Idaho?
Of the 216 Idaho places with at least one community water system on file, Ketchum ranks #18 by number of systems (10).
Either side of it: Preston (11), Rigby (11), Lewiston (9), Meridian (9)
About This Data
Figures here are the current EPA SDWIS extract joined to the 10 community water systems whose service area lists Ketchum, ranked against the 216 Idaho places with at least one system on file. Data current as of 2026-08-25.
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). PlainEnviro's violation fetch is restricted upstream to records EPA flags as health-based and then joined to active community water systems. Monitoring and reporting violations are not included.
A health-based violation row in this extract is a historical EPA registry entry. It does not describe water delivered today or current compliance status. Many records are later resolved, and public water systems notify customers when required. For current conditions, contact your local water utility or the state drinking water program.
TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.
Read our methodology - how this data is sourced, computed, and verified.