Tap and Well

Treasure Valley water quality

Idaho DEQ results for Ada, Canyon, Gem, Boise and Elmore, each next to the federal limit. Filters rank by certification for what is flagged, not by who pays more.

Cities

Open a city page, or check an address if you are not sure which system you are on.

Counties

Largest water systems

SystemCountyPeople servedStatusHardness
Veolia Water IdahoAda264,978Worth watching6.1 gpg
Meridian Water DepartmentAda147,340Worth watching7.6 gpg
City of NampaCanyon100,200Worth watching7.1 gpg
City of CaldwellCanyon74,000Worth watchingnot reported
City of KunaAda32,038Worth watching8 gpg
City of Mountain HomeElmore14,651Worth watchingnot reported
Star Sewer and Water District Water SystemAda14,000Worth watchingnot reported
City of MiddletonCanyon13,190Meetsnot reported
Garden City Water and Sewer SystemAda12,500Above limit9.9 gpg
Capitol Water Corp.Ada9,000Worth watchingnot reported
Mountain Home Air Force BaseElmore7,500Above limitnot reported
City of EmmettGem6,700Meetsnot reported
City of Eagle (Western Zone)Ada6,108Worth watchingnot reported
City of Eagle (Eastern Zone)Ada3,702Worth watchingnot reported
IDOC SBX ComplexAda3,309Meetsnot reported
City of ParmaCanyon2,250Worth watchingnot reported
IDOC Idaho State Correctional CenterAda2,204Worth watchingnot reported
City of WilderCanyon1,690Meetsnot reported
City of Glenns FerryElmore1,282Worth watchingnot reported
Dry Creek Water Company LLCAda1,125Worth watchingnot reported
Caldwell Housing AuthorityCanyon1,100Worth watchingnot reported
City of GreenleafCanyon846Meetsnot reported
Hillsdale Estates Homeowners AssociationAda800Meets3.9 gpg
Horseshoe Bend Water SupplyBoise750Meetsnot reported
Desert View Estates Water Corp.Ada650Above limitnot reported

All systems, by county

Contaminant guides