Tap and WellTreasure Valley water, from the public record

Canyon County water quality

Idaho DEQ results for 83 community systems serving about 203,284 people, hardness about 7.1 gpg (hard). Status for each system is in the table.

At least one system had a result above a federal limit.

Every community system in Canyon County

SystemPeopleStatusHardness
City of Nampa100,200Worth watching7.1 gpg
City of Caldwell74,000Worth watchingnot reported
City of Middleton13,190Meetsnot reported
City of Parma2,250Worth watchingnot reported
City of Wilder1,690Meetsnot reported
Caldwell Housing Authority1,100Worth watchingnot reported
City of Greenleaf846Meetsnot reported
City of Melba648Worth watchingnot reported
City of Notus539Meetsnot reported
Shalimar Subdivision370Worth watchingnot reported
Belle Aire Acres 2350Worth watchingnot reported
Lansing Meadows320Meetsnot reported
Lakeys Cafe and Trailer Park300Meetsnot reported
El Rancho Heights300Above limitnot reported
Evergreen Mobile Park284Worth watchingnot reported
Covert Water Users Association250Worth watchingnot reported
Rolling Hills Estates Water Company250Worth watchingnot reported
Woodview Acres Property Owners245Above limitnot reported
Sunnyridge 3 Water Corp.240Worth watchingnot reported
Sunlight Terrace234Above limitnot reported
Indian Village225Above limitnot reported
Karcher Ranchette Water Corp.213Worth watchingnot reported
Somerset West Water Corp.203Worth watchingnot reported
Owyhee Village Subdivision Water Association Inc.200Meetsnot reported
Timberstone HOA170Meetsnot reported
Lakeview Hills Water Users Association160Worth watchingnot reported
Camelot Water Association Inc.157Meetsnot reported
Clark Theurer Water Association155Worth watchingnot reported
Drake Subdivision150Above limitnot reported
Leisure Heights Homeowners Association142Worth watchingnot reported
Rio Vista Water Company 3140Meetsnot reported
Ok Water Association140Worth watchingnot reported
Par Estates Homeowners Association140Worth watchingnot reported
Shamrock Villa Water Association130Meetsnot reported
Gem State Academy121Worth watchingnot reported
Country Club Subdivisions Water Association120Worth watchingnot reported
Apache Heights Subdivision (2)110Above limitnot reported
Sky Ranch Estates104Worth watchingnot reported
Pleasant View Manor100Worth watchingnot reported
M & T Water Corp.100Worth watchingnot reported
Northside Estates HOA Inc.100Meetsnot reported
Lakeview Water Company 1100Worth watchingnot reported
Karcher Acres Subdivision100Meetsnot reported
Purple Sage Community98Above limitnot reported
East Lizard Butte Water Corp.95Meetsnot reported
Verde Hills Water Users Association Inc.95Worth watchingnot reported
Idaho Youth Ranch Hands of Promise95Worth watchingnot reported
Roswell Water Users Coop Company90Meetsnot reported
Maverick Subdivision Lasher Construction90Worth watchingnot reported
Kimpton Acres Third Subdivision88Meetsnot reported
Westview Shervik Subdivision78Meetsnot reported
Mangum Heights Subdivision75No recent datanot reported
Horizon Ridge Subdivision75Meetsnot reported
Northridge Estates Water Association75Worth watchingnot reported
Decoy Inn and RV Park75Worth watchingnot reported
Stecher Water Users Association70Worth watchingnot reported
D and S Purple Sage Ranchettes70Above limitnot reported
West River65Meetsnot reported
Stecher Mutual Water Company62Worth watchingnot reported
Southshore Water60Meetsnot reported
Rich Subdivision60Above limitnot reported
Valley View Water57Above limitnot reported
Burnie Subdivision55Meetsnot reported
M and M Mountain View Subdivision Em254Worth watchingnot reported
Sunnyridge Property Owners53Worth watchingnot reported
Dahl Subdivision51Meetsnot reported
Northstar Subdivision50Worth watchingnot reported
Lakeridge Second Subdivision50Worth watchingnot reported
Skyline Water Association50Meetsnot reported
Christis Mobile Park50Meetsnot reported
Lindenwood Water Association48Worth watchingnot reported
Vanal Heights Well Association48Meetsnot reported
Vanal Heights Sweet Water45Worth watchingnot reported
Silver Spur Subdivision44Worth watchingnot reported
H and L Park43Meetsnot reported
Locust Subdivision42Above limitnot reported
Wildrose Estates40Worth watchingnot reported
Shipman Place Subdivision40Worth watchingnot reported
Country Meadows Subdivision35Worth watchingnot reported
Sunnyridge I Subdivision35Above limitnot reported
Sunnyridge Subdivision 234Worth watchingnot reported
Aurora Subdivision30Meetsnot reported
Twin Bridges Subdivision28Worth watchingnot reported

CaldwellGreenleafMiddletonNampaNotusParmaStarWilder

Contaminants flagged in the county

ContaminantSystems flaggedHighest system
Arsenic34City of Nampa: 5.1ppb Elevated
Nitrate (as N)26City of Nampa: 6.30ppm Elevated
Uranium18Caldwell Housing Authority: 22.0ppb Elevated
Lead2Caldwell Housing Authority: 16.0ppb Elevated
HFPO-DA (GenX)3Belle Aire Acres 2: 2.3ppt Elevated
Manganese1Rolling Hills Estates Water Company: 75.0ppb Aesthetic issue
Gross Alpha2Clark Theurer Water Association: 14.5pCi/L Elevated
Fluoride1Sky Ranch Estates: 2.40ppm Elevated
Copper1Idaho Youth Ranch Hands of Promise: 1.90ppm Elevated
PFHxS1Sunnyridge I Subdivision: 2.9ppt Elevated

Private wells in Canyon County

ZIP pages are estimates from nearby samples, not a test of your well.

83605 Caldwell83607 Caldwell83626 Greenleaf83644 Middleton83651 Nampa83656 Notus83660 Parma83676 Wilder83686 Nampa83687 Nampa

How to test a private well in Idaho.

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.