Is Kuna, ID tap water safe?
Data: U.S. EPA · How we read the data · How we check it
Summary
No federal limits exceeded in EPA data for City of Kuna.
City of Kuna supplies Kuna (32,038 people).
Water system
City of Kuna
32,038 people · Groundwater · EPA ID ID4010085
| PFAS | Highest average | Limit |
|---|---|---|
| PFOA Not detected | – | 4 ppt |
| PFOS Not detected | – | 4 ppt |
| PFHxS Not detected | – | 10 ppt |
| PFNA Not detected | – | 10 ppt |
| HFPO-DA (GenX) Not detected | – | 10 ppt |
ppt = parts per trillion. "Highest average" is the highest average at any of the system's entry points, the way EPA compares results with the limits.
Lead: 0 ppb at the 90th percentile (Jun 2026, and 9 in 10 homes sampled were at or below it) Below action level
Health-based violations since 2016: 0
Across Idaho, 2 of 61 water systems EPA tested had PFAS above a 2024 federal limit, and 1 system were above the lead action level in results from the last five years. Idaho results.
Kuna homes and lead pipes
Lead service lines and lead solder were allowed until 1986, so homes from before then are the ones to check. How to check your own line.
Housing: Census American Community Survey 2020–2024 5-year estimates for Kuna city (tables B25034, B25003). Estimates for small places have a margin of error.
How nearby cities compare
| City | PFAS | Lead (90th pct.) |
|---|---|---|
| Meridian 10 mi Veolia Water Idaho | None above limits | 2 ppb |
| Nampa 11 mi City of Nampa | None above limits | 1 ppb |
| Boise City 13 mi Veolia Water Idaho | None above limits | 2 ppb |
| Eagle 16 mi Veolia Water Idaho | None above limits | 2 ppb |
| Caldwell 17 mi City of Caldwell | None above limits | 0 ppb |
| Twin Falls 116 mi City of Twin Falls | None above limits | 0 ppb |
Kuna ZIP codes (1)
- 83634
Questions
Is Kuna tap water safe to drink?
City of Kuna has had no health-based violations since 2016. Utility data can't show lead from your own pipes: if your home was built before 1986, test your tap. Your utility's annual Consumer Confidence Report is the official summary.
Who supplies water in Kuna, ID?
City of Kuna, which serves 32,038 people.
Does Kuna tap water have PFAS?
None detected above EPA's reporting limits. City of Kuna had no PFAS detected in EPA's 2023–2025 testing. "Not detected" means below the reporting limit (about 2 to 20 ppt), not proven zero.
Do Kuna homes have lead pipes?
Census estimates put 7% of Kuna homes as built before 1980 (Idaho: 39%). Lead service lines and lead solder were allowed until 1986, so older homes are more likely to have them. City of Kuna's service line inventory says what your line is made of. The only way to know for your home is to check the line where it enters the house and test your tap.
Source: U.S. EPA drinking water records and PFAS testing (UCMR 5). How we read the data.