Tap and WellTreasure Valley water, from the public record

Uranium in Treasure Valley drinking water

111 of 142 systems that tested for it in the last 36 months detected it; 27 are above the limit, elevated, or an aesthetic issue. Uranium is a naturally radioactive element. Certified filters are in the list.

Detected in a number of Ada and Canyon County wells drawing from granitic sediments. Certified uranium claims are rare; expect manufacturer-tier evidence.

SystemCounty36 mo maxLatestStatusLast sample
Desert View Estates Water Corp.Ada74.0ppb74.0ppbAbove limit2026-06-22
Sunlight TerraceCanyon67.0ppb53.0ppbAbove limit2026-08-19
Woodview Acres Property OwnersCanyon63.0ppb14.0ppbElevated2026-06-29
Rich SubdivisionCanyon46.0ppbNDAbove limit2026-03-03
Paradise Estates Water Corp.Ada43.0ppb24.0ppbElevated2026-06-25
Franklin Domestic Water UsersAda43.0ppbNDAbove limit2024-02-23
City of NampaCanyon42.0ppb20.0ppbDetected2026-08-19
Meridian Water DepartmentAda41.8ppb32.8ppbElevated2026-07-29
Veolia Water IdahoAda36.0ppb31.0ppbDetected2026-07-28
Capitol Water Corp.Ada32.0ppb5.0ppbElevated2026-07-14
West Meadows EstatesAda30.0ppb25.0ppbElevated2026-07-14
M and M Mountain View Subdivision Em2Canyon27.0ppb20.0ppbElevated2026-08-19
Silver Spur SubdivisionCanyon24.0ppb24.0ppbElevated2025-05-20
Rivervine SubdivisionAda23.0ppb23.0ppbElevated2024-09-27
City of Eagle (Eastern Zone)Ada22.0ppb22.0ppbElevated2025-03-21
Caldwell Housing AuthorityCanyon22.0ppb21.0ppbElevated2025-06-16
Gem State AcademyCanyon22.0ppb22.0ppbElevated2025-11-13
Ok Water AssociationCanyon20.0ppb20.0ppbElevated2025-09-08
Verde Hills Water Users Association Inc.Canyon20.0ppb20.0ppbElevated2025-04-22
Purple Sage CommunityCanyon19.0ppb19.0ppbElevated2024-02-06
Sunnyridge 3 Water Corp.Canyon18.0ppb18.0ppbElevated2026-03-02
Par Estates Homeowners AssociationCanyon18.0ppb18.0ppbElevated2025-12-18
M & T Water Corp.Canyon18.0ppb16.0ppbElevated2025-06-18
Country Meadows SubdivisionCanyon18.0ppb18.0ppbElevated2025-11-18
City of KunaAda17.0ppb8.0ppbDetected2026-08-13
Stecher Mutual Water CompanyCanyon17.0ppb11.0ppbDetected2026-07-15
Sunnyridge Property OwnersCanyon17.0ppb17.0ppbElevated2025-09-23
Covert Water Users AssociationCanyon16.0ppb4.9ppbDetected2025-10-20
Greenhills Estates 3Ada15.0ppbNDElevated2026-02-27
Northridge Estates Water AssociationCanyon15.0ppb15.0ppbElevated2025-04-22
D and S Purple Sage RanchettesCanyon15.0ppb15.0ppbElevated2025-05-02
Lindenwood Water AssociationCanyon15.0ppb15.0ppbElevated2025-06-18
Linda Vista Mobile Home ParkAda14.0ppb14.0ppbDetected2025-04-08
Eagle West Subdivision Water AssociationAda14.0ppb14.0ppbDetected2025-04-22
Lakeridge Second SubdivisionCanyon14.0ppb14.0ppbDetected2025-08-13
Belle Aire Acres 2Canyon13.0ppb13.0ppbDetected2025-09-23
Sunnyridge I SubdivisionCanyon13.0ppb13.0ppbDetected2025-10-20
City of CaldwellCanyon12.0ppb3.0ppbDetected2025-08-20
Rustic Acres Mobile Home ParkAda12.0ppb12.0ppbDetected2025-11-20
IDOC SBX ComplexAda11.0ppb11.0ppbDetected2025-08-05
IDOC Idaho State Correctional CenterAda11.0ppb11.0ppbDetected2025-08-19
Rolling Hills Estates Water CompanyCanyon11.0ppb2.0ppbDetected2025-05-09
Indian VillageCanyon11.0ppb11.0ppbDetected2025-12-02
Karcher Ranchette Water Corp.Canyon11.0ppb11.0ppbDetected2025-11-24
Shalimar SubdivisionCanyon10.0ppb10.0ppbDetected2025-07-21
Camelot Water Association Inc.Canyon10.0ppb10.0ppbDetected2025-11-24
Clark Theurer Water AssociationCanyon10.0ppb10.0ppbDetected2025-05-19
Skyline Water AssociationCanyon10.0ppb10.0ppbDetected2025-09-23
Sunnyridge Subdivision 2Canyon10.0ppb10.0ppbDetected2025-12-16
Valley View WaterCanyon9.4ppb9.4ppbDetected2025-01-16
Shamrock Villa Water AssociationCanyon9.0ppb9.0ppbDetected2025-10-07
Terrace Water Corp. Inc.Ada9.0ppb9.0ppbDetected2025-11-20
Westview Shervik SubdivisionCanyon9.0ppb9.0ppbDetected2025-07-21
Maverick Subdivision Lasher ConstructionCanyon8.2ppb8.2ppbDetected2025-10-15
Flying H Trailer RanchAda8.0ppb8.0ppbDetected2025-04-08
Scottys Mobile Home ParkAda8.0ppb8.0ppbDetected2025-04-22
Somerset West Water Corp.Canyon7.0ppb7.0ppbDetected2025-11-24
Leisure Heights Homeowners AssociationCanyon7.0ppb7.0ppbDetected2025-11-17
Eagle MHCAda7.0ppb7.0ppbDetected2025-05-15
Apache Heights Subdivision (2)Canyon7.0ppb7.0ppbDetected2025-12-02
Willowbrook Estates Property OwnersAda7.0ppb7.0ppbDetected2025-11-25
Stecher Water Users AssociationCanyon7.0ppb7.0ppbDetected2024-07-17
Sierra Water Corp.Ada7.0ppb7.0ppbDetected2025-04-28
Locust SubdivisionCanyon7.0ppb7.0ppbDetected2025-12-02
Anderson Circle Water Corp.Ada7.0ppb7.0ppbDetected2025-06-26
Arrowrock RanchAda6.0ppb6.0ppbDetected2025-12-04
Evans Water Corp.Ada6.0ppb5.0ppbDetected2025-03-04
Simplot Livestock Company GrandviewElmore6.0ppb6.0ppbDetected2025-11-04
Twin Bridges SubdivisionCanyon6.0ppb6.0ppbDetected2025-12-02
Wymosa Water Association Inc.Ada5.0ppb5.0ppbDetected2025-11-19
Vanal Heights Sweet WaterCanyon5.0ppb5.0ppbDetected2025-12-29
Riley Trailer ParkAda5.0ppb5.0ppbDetected2025-08-13
Decoy Inn and RV ParkCanyon4.4ppb4.4ppbDetected2025-04-10
Lakeview Water Company 1Canyon4.2ppb4.2ppbDetected2025-06-05
City of MelbaCanyon4.0ppb4.0ppbDetected2026-07-01
Hamilton PlaceElmore4.0ppb4.0ppbDetected2025-11-11
Hi View WaterAda4.0ppb4.0ppbDetected2025-06-23
Forrey HeightsAda4.0ppb4.0ppbDetected2025-11-13
Vanal Heights Well AssociationCanyon3.1ppb3.1ppbDetected2025-01-10
Garden City Water and Sewer SystemAda3.0ppb3.0ppbDetected2025-09-04
City of Eagle (Western Zone)Ada3.0ppb3.0ppbDetected2025-04-29
City of Glenns FerryElmore3.0ppb3.0ppbDetected2024-04-25
Owyhee Village Subdivision Water Association Inc.Canyon3.0ppb3.0ppbDetected2025-11-05
Klugherz Water Corp.Ada3.0ppb3.0ppbDetected2026-06-22
Eagle Point CommunityAda3.0ppb3.0ppbDetected2025-11-20
Krizview ParkAda3.0ppb3.0ppbDetected2025-04-08
Burnie SubdivisionCanyon3.0ppb3.0ppbDetected2025-11-05
City of MiddletonCanyon2.0ppbNDDetected2025-04-30
City of EmmettGem2.0ppb2.0ppbDetected2025-08-19
Eagle Glen Homeowners Association Inc.Ada2.0ppb2.0ppbDetected2025-05-15
El Rancho HeightsCanyon2.0ppb2.0ppbDetected2025-11-24
Evergreen Mobile ParkCanyon2.0ppb2.0ppbDetected2025-12-03
Canyon Creek Mobile Home ParkElmore2.0ppbNDDetected2025-11-04
Lakeview Hills Water Users AssociationCanyon2.0ppb2.0ppbDetected2025-12-02
Country Club Subdivisions Water AssociationCanyon2.0ppb2.0ppbDetected2025-06-16
Malad and Hilton Water Company Inc.Ada2.0ppb2.0ppbDetected2025-06-26
Christis Mobile ParkCanyon2.0ppb2.0ppbDetected2025-11-05
Amy Trailer ParkAda2.0ppb2.0ppbDetected2025-10-22
OspreyBoise1.6ppb1.6ppbDetected2025-12-02
Lansing MeadowsCanyon1.0ppb1.0ppbDetected2025-11-18
Trinity Estates Water Users AssociationElmore1.0ppbNDDetected2026-06-17
Sawtooth Estates Water UsersElmore1.0ppbNDDetected2025-06-25
Stanley Pond Inc.Ada1.0ppb1.0ppbDetected2025-06-26
Wildrose EstatesCanyon1.0ppb1.0ppbDetected2025-10-14
Town and Country Water Users AssociationElmore0.5ppb0.5ppbDetected2025-12-15
Mores Creek Rim Ranch Water DistrictBoise0.5ppb0.1ppbDetected2024-06-28
Wilderness Ranch Owners Association Inc.Boise0.4ppb0.4ppbDetected2025-09-10
Duquette Pines Homeowners AssociationBoise0.4ppb0.4ppbDetected2025-08-08
Silver Sage Real Property Owners AssociationElmore0.3ppb0.3ppbDetected2025-07-15
Idaho City Water DepartmentBoise0.2ppb0.2ppbDetected2025-11-19
Atlanta Water AssociationElmore0.2ppb0.2ppbDetected2025-09-09

Limits

Federal limit (MCL)
30 ug/L (30.0ppb)
Health goal (MCLG)
0.0ppb
Some people who drink water containing uranium in excess of the MCL over many years may have an increased risk of getting cancer and kidney toxicity.EPA, quoted.

Removal methods in the reference list: reverse osmosis, anion exchange, lime softening. A method name is not a product certification.

By city: Uranium in Kuna drinking water, Uranium in Nampa drinking water, Uranium in Boise City drinking water, Uranium in Meridian drinking water, Uranium in Garden City drinking water, Uranium in Eagle drinking water, Uranium in Caldwell drinking water, Uranium in Glenns Ferry drinking water, Uranium in Middleton drinking water, Uranium in Emmett drinking water, Uranium in Robie Creek drinking water, Uranium in Wilder drinking water, Uranium in Idaho City drinking water.

241 groundwater zones in the region have confident (grade A or B) estimates for Uranium. See well estimates by ZIP.

Numbers are the system's samples at its taps and wells, not yours. Lead and copper are 90th percentiles from sampled homes. Well pages are nearby-sample estimates. Health text restates EPA and DEQ. Methodology.