Tap and WellTreasure Valley water, from the public record

Lead in Treasure Valley drinking water

102 of 160 systems that tested for it in the last 36 months detected it; 7 are above the limit, elevated, or an aesthetic issue. Lead is an inorganic contaminant. Certified filters are in the list.

Lead is almost never in Treasure Valley source water. Results reflect sampled homes and depend on the home's plumbing, especially pre-1986 solder and brass fixtures.

Results are from sampled homes in the system, not from your tap.

SystemCounty36 mo maxLatestStatusLast sample
Mores Creek Rim Ranch Water DistrictBoise72.0ppb3.0ppbDetected2025-06-30
Hammett Haven ApartmentsElmore48.0ppb48.0ppbAbove limit2026-09-14
Caldwell Housing AuthorityCanyon16.0ppb9.0ppbElevated2026-06-30
Sawtooth Estates Water UsersElmore16.0ppb16.0ppbAbove limit2026-08-26
Country Club Subdivisions Water AssociationCanyon14.0ppb14.0ppbElevated2026-09-14
West Meadows EstatesAda11.0ppb11.0ppbElevated2025-12-31
Eagle Glen Homeowners Association Inc.Ada9.0ppb9.0ppbElevated2024-12-31
Valley Hi EstatesBoise8.0ppb8.0ppbElevated2024-12-31
City of MiddletonCanyon7.0ppb2.0ppbDetected2026-09-14
Flying H Trailer RanchAda7.0ppb7.0ppbDetected2024-12-31
Lansing MeadowsCanyon7.0ppb7.0ppbDetected2024-12-31
Paradise Estates Water Corp.Ada7.0ppb7.0ppbDetected2024-12-31
Trinity Estates Water Users AssociationElmore7.0ppb7.0ppbDetected2025-12-31
Drake SubdivisionCanyon7.0ppb7.0ppbDetected2026-09-14
Eagle MHCAda7.0ppb7.0ppbDetected2025-12-31
Purple Sage CommunityCanyon7.0ppb2.0ppbDetected2026-09-14
West RiverCanyon7.0ppb7.0ppbDetected2024-12-31
H and L ParkCanyon7.0ppb7.0ppbDetected2026-09-14
City of Eagle - AvimorAda6.0ppb6.0ppbDetected2026-06-30
R and V Mobile Home ParkGem6.0ppb6.0ppbDetected2025-12-31
City of WilderCanyon5.0ppb5.0ppbDetected2025-12-31
Mellen Subdivision Water DistrictElmore5.0ppb5.0ppbDetected2024-12-31
Indian VillageCanyon5.0ppb5.0ppbDetected2024-12-31
Meadows Mobile ParkElmore5.0ppb5.0ppbDetected2026-09-14
Clark Theurer Water AssociationCanyon5.0ppb5.0ppbDetected2025-12-31
Horseshu Vue Ranch SubdivisionBoise5.0ppb5.0ppbDetected2025-12-31
Mountain Home Air Force BaseElmore4.0ppb4.0ppbDetected2026-09-14
City of Eagle (Eastern Zone)Ada4.0ppb4.0ppbDetected2026-09-14
Idaho City Water DepartmentBoise4.0ppb2.0ppbDetected2025-06-30
Wilderness Ranch Owners Association Inc.Boise4.0ppb4.0ppbDetected2026-09-14
City of Eagle - ValnovaAda4.0ppb4.0ppbDetected2026-06-30
Terrace Lakes Water CompanyBoise4.0ppb4.0ppbDetected2025-12-31
Timberstone HOACanyon4.0ppb4.0ppbDetected2024-12-31
Karcher Acres SubdivisionCanyon4.0ppb4.0ppbDetected2025-12-31
Roswell Water Users Coop CompanyCanyon4.0ppb4.0ppbDetected2025-12-31
Mountain Shadows HOA Inc.Boise4.0ppb4.0ppbDetected2025-12-31
Wildrose EstatesCanyon4.0ppb4.0ppbDetected2026-09-14
Aurora SubdivisionCanyon4.0ppb4.0ppbDetected2026-09-14
Meridian Water DepartmentAda3.9ppb3.9ppbDetected2026-06-30
Veolia Water IdahoAda3.0ppb2.0ppbDetected2026-06-30
City of MelbaCanyon3.0ppb3.0ppbDetected2025-12-31
Canyon Creek Mobile Home ParkElmore3.0ppb3.0ppbDetected2025-12-31
Rivers Point Property Owners AssociationBoise3.0ppb3.0ppbDetected2024-12-31
Krizview ParkAda3.0ppb3.0ppbDetected2025-12-31
Pleasant Acres Mobile Home ParkElmore3.0ppb3.0ppbDetected2025-12-31
Island Village Mobile Home ParkAda3.0ppb3.0ppbDetected2024-12-31
Mountain SageElmore3.0ppb3.0ppbDetected2025-12-31
Northstar SubdivisionCanyon3.0ppb3.0ppbDetected2025-12-31
Sunnyridge I SubdivisionCanyon3.0ppb3.0ppbDetected2024-12-31
City of NampaCanyon2.0ppb1.0ppbDetected2026-09-14
City of GreenleafCanyon2.0ppb2.0ppbDetected2025-12-31
Horseshoe Bend Water SupplyBoise2.0ppb2.0ppbDetected2025-12-31
City of NotusCanyon2.0ppb2.0ppbDetected2025-12-31
Mountain View Water and Road AssociationBoise2.0ppb2.0ppbDetected2026-06-30
Wymosa Water Association Inc.Ada2.0ppb2.0ppbDetected2024-12-31
Woodview Acres Property OwnersCanyon2.0ppb2.0ppbDetected2025-12-31
Sunlight TerraceCanyon2.0ppb2.0ppbDetected2025-12-31
Greenhills Estates 3Ada2.0ppb2.0ppbDetected2025-12-31
Klugherz Water Corp.Ada2.0ppb2.0ppbDetected2025-12-31
Camelot Water Association Inc.Canyon2.0ppb2.0ppbDetected2025-12-31
Apache Heights Subdivision (2)Canyon2.0ppb2.0ppbDetected2025-12-31
Sky Ranch EstatesCanyon2.0ppb2.0ppbDetected2026-09-14
OspreyBoise2.0ppb2.0ppbDetected2024-12-31
Northside Estates HOA Inc.Canyon2.0ppb2.0ppbDetected2024-12-31
Simplot Livestock Company GrandviewElmore2.0ppb2.0ppbDetected2026-09-14
Terrace Water Corp. Inc.Ada2.0ppb2.0ppbDetected2025-12-31
Northridge Estates Water AssociationCanyon2.0ppb2.0ppbDetected2025-12-31
Sierra Water Corp.Ada2.0ppb2.0ppbDetected2024-12-31
Sunnyridge Property OwnersCanyon2.0ppb2.0ppbDetected2025-12-31
Cherry Ridge RehabGem2.0ppb2.0ppbDetected2024-12-31
Amy Trailer ParkAda2.0ppb2.0ppbDetected2025-12-31
Silver Spur SubdivisionCanyon2.0ppb2.0ppbDetected2024-12-31
Anderson Circle Water Corp.Ada2.0ppb2.0ppbDetected2025-12-31
Boise Holcomb Water Users Assoc. Inc.Boise2.0ppb2.0ppbDetected2025-12-31
Kimpton Acres Third SubdivisionCanyon1.2ppb1.0ppbDetected2026-09-14
Star Sewer and Water District Water SystemAda1.0ppb1.0ppbDetected2025-12-31
City of EmmettGem1.0ppb1.0ppbDetected2026-09-14
City of Eagle (Western Zone)Ada1.0ppb1.0ppbDetected2024-12-31
City of ParmaCanyon1.0ppb1.0ppbDetected2025-12-31
Shalimar SubdivisionCanyon1.0ppb1.0ppbDetected2025-12-31
Belle Aire Acres 2Canyon1.0ppb1.0ppbDetected2025-12-31
Castle Mountain Creeks Owners AssociationBoise1.0ppb1.0ppbDetected2025-12-31
Covert Water Users AssociationCanyon1.0ppb1.0ppbDetected2024-12-31
Sunnyridge 3 Water Corp.Canyon1.0ppb1.0ppbDetected2025-12-31
Karcher Ranchette Water Corp.Canyon1.0ppb1.0ppbDetected2025-12-31
Owyhee Village Subdivision Water Association Inc.Canyon1.0ppb1.0ppbDetected2025-12-31
Duquette Pines Homeowners AssociationBoise1.0ppb1.0ppbDetected2024-12-31
Eagle Point CommunityAda1.0ppb1.0ppbDetected2025-12-31
Atlanta Water AssociationElmore1.0ppb1.0ppbDetected2024-12-31
King Hill Domestic Water and SewerElmore1.0ppb1.0ppbDetected2024-12-31
New Horizons Water Inc.Elmore1.0ppb1.0ppbDetected2024-12-31
Grouse Point Water Company LLCAda1.0ppb1.0ppbDetected2024-12-31
Rich SubdivisionCanyon1.0ppb1.0ppbDetected2025-12-31
Danskin Properties Association Inc.Elmore1.0ppb1.0ppbDetected2025-12-31
Skyline Water AssociationCanyon1.0ppb1.0ppbDetected2025-12-31
Willowtree Estates Homeowner AssociationAda1.0ppb1.0ppbDetected2024-12-31
Country Meadows SubdivisionCanyon1.0ppb1.0ppbDetected2026-09-14
Sunnyridge Subdivision 2Canyon1.0ppb1.0ppbDetected2025-12-31
Rim Acres Mutual WaterAda1.0ppb1.0ppbDetected2024-12-31
Dell Subdivision Water AssociationAda1.0ppb1.0ppbDetected2025-12-31
Twin Bridges SubdivisionCanyon1.0ppb1.0ppbDetected2025-12-31
Horizon Ridge SubdivisionCanyon0.2ppb0.2ppbDetected2026-09-14

Limits

Action level
0.015 mg/L (15.0ppb)
Health goal (MCLG)
0.0ppb
Infants and children who drink water containing lead in excess of the action level could experience delays in their physical or mental development. Adults could experience kidney problems or high blood pressure.EPA, quoted. For infants and pregnancy, read the agency text as written.

Removal methods in the reference list: reverse osmosis, NSF/ANSI 53 carbon block, distillation. A method name is not a product certification.

By city: Lead in Caldwell drinking water, Lead in Eagle drinking water, Lead in Middleton drinking water, Lead in Boise City drinking water, Lead in Wilder drinking water, Lead in Mountain Home drinking water, Lead in Mountain Home AFB drinking water, Lead in Idaho City drinking water, Lead in Robie Creek drinking water, Lead in Meridian drinking water, Lead in Garden City drinking water, Lead in Star drinking water, Lead in Nampa drinking water, Lead in Greenleaf drinking water, Lead in Horseshoe Bend drinking water, Lead in Notus drinking water, Lead in Emmett drinking water, Lead in Parma drinking water.

21 groundwater zones in the region have confident (grade A or B) estimates for Lead. 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.