Hayden Water Quality
Idaho
According to EPA SDWIS, Hayden, Idaho is served by 13 community water systems covering about 22,077 people. The same extract lists 1 health-based violation record, most recently coded 5200 in 2024. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in Hayden, Idaho is delivered through 13 EPA-regulated community water systems serving an estimated 22,077 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 1 violation record across the 13 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 1 distinct EPA contaminant code: LEAD AND COPPER RULE REVISIONS.
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 |
|---|---|---|---|
| HAYDEN LAKE IRRIGATION DIST | 9,375 | 0 | Clean |
| AVONDALE IRRIGATION DIST | 8,785 | 0 | Clean |
| BLACK ROCK UTILITIES INC | 1,014 | 0 | Clean |
| GREENFERRY WATER & SEWER DISTRICT | 978 | 0 | Clean |
| LONE MOUNTAIN ESTATES | 448 | 0 | Clean |
| GARWOOD WATER COOP | 398 | 0 | Clean |
| CHATEAUX WATER ASSN INC | 275 | 0 | Clean |
| SOLAR ACRES WATER ASSOCIATION, LLC | 250 | 0 | Clean |
| OHIO MATCH ROAD WATER DIST | 245 | 0 | Clean |
| HIDDEN VALLEY WATER ASSN | 125 | 0 | Clean |
| PARKVIEW WATER ASSN | 90 | 1 | Health |
| HARDING ACRES TRACTS WATER ASSN INC | 64 | 0 | Clean |
| PRAIRIE WATER ASSN | 30 | 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 |
|---|---|---|
| PARKVIEW WATER ASSN | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
What are Hayden's health-based records for?
Every health-based violation record in Hayden carries one EPA contaminant or rule code. Counts are records on file in the EPA SDWIS extract, not current test results.
| Contaminant | Records | Systems |
|---|---|---|
| Lead and Copper Rule Revisions | 1 | 1 |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Hayden, Idaho? ▼
How many water violations does Hayden have in this EPA extract? ▼
What contaminants were found in Hayden water? ▼
How many water systems serve Hayden? ▼
Where does Hayden get its drinking water? ▼
How does Hayden compare in Idaho?
Of the 216 Idaho places with at least one community water system on file, Hayden ranks #11 by number of systems (13).
Either side of it: Pocatello (15), Blackfoot (13), Mountain Home (13), Coeur D Alene (12)
About This Data
Figures here are the current EPA SDWIS extract joined to the 13 community water systems whose service area lists Hayden, 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.