Mountain Home Water Quality
Idaho
According to EPA SDWIS, Mountain Home, Idaho is served by 13 community water systems covering about 16,107 people. The same extract lists 37 health-based violation records, most recently coded 1005 in 2025. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in Mountain Home, Idaho is delivered through 13 EPA-regulated community water systems serving an estimated 16,107 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 37 violation records across the 13 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 5 distinct EPA contaminant codes: Arsenic, Revised Total Coliform Rule, LEAD AND COPPER RULE REVISIONS, Groundwater Rule, Coliform (TCR).
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 |
|---|---|---|---|
| MOUNTAIN HOME, CITY OF | 14,651 | 5 | Health |
| TRINITY ESTATES WATER USERS ASSN | 250 | 1 | Health |
| MELLEN SUBD WATER DIST | 250 | 0 | Clean |
| SUMMERWIND WATER USERS | 192 | 0 | Clean |
| SAWTOOTH ESTATES WATER USERS | 175 | 4 | Health |
| BLUE SAGE SUBDIVISION | 112 | 0 | Clean |
| SPLENDID ACRES WATER ASSN | 91 | 0 | Clean |
| TOWN AND COUNTRY WATER USERS ASSN | 86 | 1 | Health |
| NEW HORIZONS WATER INC | 85 | 2 | Health |
| OAKLEAF SUBDIVISION | 71 | 1 | Health |
| HAMMETT HAVEN APARTMENTS | 64 | 18 | Health |
| CAMAS ESTATES WATER USERS | 50 | 0 | Clean |
| SILVER SAGE REAL PROPERTY OWNERS ASSN | 30 | 5 | Health |
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 |
|---|---|---|
| HAMMETT HAVEN APARTMENTS | Arsenic | 2025-10-01 |
| MOUNTAIN HOME, CITY OF | Revised Total Coliform Rule | 2025-08-01 |
| HAMMETT HAVEN APARTMENTS | Arsenic | 2025-07-01 |
| HAMMETT HAVEN APARTMENTS | Arsenic | 2025-04-01 |
| HAMMETT HAVEN APARTMENTS | Arsenic | 2025-01-01 |
| TOWN AND COUNTRY WATER USERS ASSN | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| SILVER SAGE REAL PROPERTY OWNERS ASSN | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| SILVER SAGE REAL PROPERTY OWNERS ASSN | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| NEW HORIZONS WATER INC | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| NEW HORIZONS WATER INC | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| MOUNTAIN HOME, CITY OF | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| MOUNTAIN HOME, CITY OF | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| HAMMETT HAVEN APARTMENTS | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| HAMMETT HAVEN APARTMENTS | Arsenic | 2024-10-01 |
| HAMMETT HAVEN APARTMENTS | Arsenic | 2024-10-01 |
| HAMMETT HAVEN APARTMENTS | Arsenic | 2024-10-01 |
| SILVER SAGE REAL PROPERTY OWNERS ASSN | Revised Total Coliform Rule | 2024-09-14 |
| SILVER SAGE REAL PROPERTY OWNERS ASSN | Revised Total Coliform Rule | 2024-09-03 |
| SILVER SAGE REAL PROPERTY OWNERS ASSN | Revised Total Coliform Rule | 2024-07-01 |
| HAMMETT HAVEN APARTMENTS | Arsenic | 2024-07-01 |
| HAMMETT HAVEN APARTMENTS | Arsenic | 2024-07-01 |
| HAMMETT HAVEN APARTMENTS | Arsenic | 2024-07-01 |
| OAKLEAF SUBDIVISION | Groundwater Rule | 2021-06-01 |
| TRINITY ESTATES WATER USERS ASSN | Revised Total Coliform Rule | 2019-09-01 |
| MOUNTAIN HOME, CITY OF | Revised Total Coliform Rule | 2017-08-12 |
| MOUNTAIN HOME, CITY OF | Revised Total Coliform Rule | 2017-08-12 |
| HAMMETT HAVEN APARTMENTS | Revised Total Coliform Rule | 2017-06-01 |
| HAMMETT HAVEN APARTMENTS | Revised Total Coliform Rule | 2017-06-01 |
| HAMMETT HAVEN APARTMENTS | Revised Total Coliform Rule | 2017-06-01 |
| HAMMETT HAVEN APARTMENTS | Coliform (TCR) | 2014-07-01 |
| HAMMETT HAVEN APARTMENTS | Coliform (TCR) | 2013-08-01 |
| SAWTOOTH ESTATES WATER USERS | Groundwater Rule | 2011-09-28 |
| SAWTOOTH ESTATES WATER USERS | Groundwater Rule | 2011-09-28 |
| SAWTOOTH ESTATES WATER USERS | Groundwater Rule | 2011-09-28 |
| SAWTOOTH ESTATES WATER USERS | Groundwater Rule | 2011-09-28 |
| HAMMETT HAVEN APARTMENTS | Coliform (TCR) | 1996-07-01 |
| HAMMETT HAVEN APARTMENTS | Coliform (TCR) | 1996-07-01 |
What are Mountain Home's health-based records for?
Mountain Home'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 |
|---|---|---|
| Revised Total Coliform Rule | 10 | 4 |
| Arsenic | 10 | 1 |
| Lead and Copper Rule Revisions | 8 | 5 |
| Groundwater Rule | 5 | 2 |
| Coliform (TCR) | 4 | 1 |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Mountain Home, Idaho? ▼
How many water violations does Mountain Home have in this EPA extract? ▼
What contaminants were found in Mountain Home water? ▼
How many water systems serve Mountain Home? ▼
Where does Mountain Home get its drinking water? ▼
How does Mountain Home compare in Idaho?
Of the 216 Idaho places with at least one community water system on file, Mountain Home ranks #12 by number of systems (13).
Either side of it: Blackfoot (13), Hayden (13), Coeur D Alene (12), Post Falls (12)
About This Data
Figures here are the current EPA SDWIS extract joined to the 13 community water systems whose service area lists Mountain Home, 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.