Is Kuna, ID Tap Water Safe? Quality & Contaminants

What was found in Kuna's water

The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.

Contaminant	Level vs EPA limit	Suppliers	Source
Nitrate	4500 µg/L 45% of the EPA limit 10000 µg/L Main supplier: KUNA CITY OF · 32,038 people · 2019 Highest in the city: 4800 µg/L — DESERT VIEW ESTATES WATER CORP · 650 people · 2019	5/5	SYR4
Nitrate-Nitrite	3195 µg/L 32% of the EPA limit 10000 µg/L Main supplier: KUNA CITY OF · 32,038 people · 2019	2/5	SYR4
Fluoride	889 µg/L 22% of the EPA limit 4000 µg/L Main supplier: KUNA CITY OF · 32,038 people · 2019 Highest in the city: 2072 µg/L — DESERT VIEW ESTATES WATER CORP · 650 people · 2019	4/5	SYR4
Barium	90 µg/L 4.5% of the EPA limit 2000 µg/L Main supplier: KUNA CITY OF · 32,038 people · 2019	2/5	SYR4
TTHM	7.19 µg/L 9% of the EPA limit 80 µg/L Main supplier: KUNA CITY OF · 32,038 people · 2019 Highest in the city: 39.45 µg/L — DESERT VIEW ESTATES WATER CORP · 650 people · 2019	2/5	SYR4
Gross Alpha, Excl. Radon And U	25.4 pCi/L 169% of the EPA limit, at the 95th percentile of samples — 15 pCi/L Main supplier: KUNA CITY OF · 32,038 people · 2019	1/5	SYR4
Combined Uranium	22 µg/L 73% of the EPA limit 30 µg/L Main supplier: KUNA CITY OF · 32,038 people · 2019	3/5	SYR4
Lithium	21 µg/L No EPA limit set Main supplier: KUNA CITY OF · 32,038 people · 2025	1/5	UCMR-5
Nitrite	19.5 µg/L 2% of the EPA limit 1000 µg/L Main supplier: KUNA CITY OF · 32,038 people · 2019	1/5	SYR4
Arsenic	8.18 µg/L 82% of the EPA limit 10 µg/L Main supplier: KUNA CITY OF · 32,038 people · 2019 Highest in the city: 9.2 µg/L — FORREY HEIGHTS · 49 people · 2019	3/5	SYR4
Chromium	3 µg/L 3% of the EPA limit 100 µg/L Main supplier: KUNA CITY OF · 32,038 people · 2019 Highest in the city: 8 µg/L — FORREY HEIGHTS · 49 people · 2019	2/5	SYR4
Total Haloacetic Acids (HAA5)	2.4335 µg/L 4.1% of the EPA limit 60 µg/L Main supplier: KUNA CITY OF · 32,038 people · 2019 Highest in the city: 7.175 µg/L — DESERT VIEW ESTATES WATER CORP · 650 people · 2019	2/5	SYR4
Di(2-ethylhexyl) Phthalate	4.87 µg/L 81% of the EPA limit 6 µg/L Highest in the city: NORTH HILLS MOBILE VILLAGE · 63 people · 2019	1/5	SYR4
Combined Radium (-226 And -228)	2.875 pCi/L 57% of the EPA limit 5 pCi/L Main supplier: KUNA CITY OF · 32,038 people · 2019	2/5	SYR4
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: KUNA CITY OF · 32,038 people · 2023 Highest in the city: 0.0010 mg/L — NORTH HILLS MOBILE VILLAGE · 63 people · 2025	5/5	LCR

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of the system's samples — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Kuna

Supplier	Population served
KUNA CITY OF	32,038
DESERT VIEW ESTATES WATER CORP	650
NORTH HILLS MOBILE VILLAGE	63
HI VIEW WATER	55
FORREY HEIGHTS	49

Frequently asked questions about Kuna tap water

Is Kuna tap water safe to drink?

EPA testing detected 15 contaminants in the water serving Kuna. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Kuna?

5 public water suppliers report drinking-water monitoring for Kuna, Idaho to the EPA. Each is listed above with its population served.

What contaminants are in Kuna's water?

The contaminants EPA monitoring detected in Kuna include Nitrate, Nitrate-Nitrite, Fluoride, Barium, TTHM. The full list, with the level at the main supplier and the data source, is in the table above.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.