Tap and WellTreasure Valley water, from the public record

Well water testing in the Treasure Valley

What to test for in Treasure Valley well water, by ZIP. Nearby samples are estimates. A lab test is the only way to know your well.

No agency tests a private well. Each ZIP page is an estimate from nearby samples (count and confidence grade), so you know what to test. How to test a well.

Well estimates, 27 ZIP codes

Each page is nearby samples in a 1.2 km zone, with a confidence grade. Not a test of any well.

ZIPAreaCountyNearby samplesEstimate
83605CaldwellCanyon517Worth watching
83607CaldwellCanyon250Above limit
83617EmmettGem147Above limit
83626GreenleafCanyon342Above limit
83629Horseshoe BendBoise172Above limit
83634KunaAda214Worth watching
83636LethaGem395Worth watching
83642MeridianAda201Above limit
83644MiddletonCanyon307Above limit
83646MeridianAda250Worth watching
83648Mountain Home AFBElmore308Worth watching
83651NampaCanyon568Worth watching
83656NotusCanyon288Above limit
83660ParmaCanyon211Above limit
83669StarAda351Worth watching
83676WilderCanyon485Above limit
83686NampaCanyon414Above limit
83687NampaCanyon416Above limit
83703Boise CityAda406Worth watching
83704Boise CityAda202Worth watching
83705Boise CityAda168Worth watching
83706Boise CityAda296Meets
83709Boise CityAda286Worth watching
83713Boise CityAda132Above limit
83714Garden CityAda281Above limit
83720Boise CityAda162Worth watching
83725Boise CityAda565Worth watching

How to test a well

Which lab panel to order, what the health districts offer, and what the numbers mean. Read the guide.

Lab test kits

Mail-in kits that cover arsenic, uranium, nitrate, bacteria and PFAS. See kits.

On city water instead?

Every public system in the five counties has its own page. Browse by county or check your address.