EPA EXPORT · 13 SEP 2026FEDERAL COMPLIANCE RECORDS · NOT A HOME WATER TEST
TAP WATERLEDGERPublic system compliance records

STATE / TERRITORY LEDGER

Idaho drinking water system records

EPA compliance fields for active community water systems reporting at least 2,500 people served.

Systems71active CWS · pop. 2,500+
Population served1,374,372reported total; may overlap
Current violation flag29.6%21 systems
Serious-violator flag5.6%4 systems

01 / LARGEST SYSTEMS

Community water systems in Idaho

Population served is a system-reported service figure. It is not a count of unique state residents.

Water systemPopulation servedPrimary sourceCurrent export status
Veolia Water IdahoID4010016264,978Surface waterNo current violation flagged
Meridian Water DeptID4010097147,340Ground waterNo current violation flagged
Nampa City OfID3140080100,200Ground waterNo current violation flagged
Caldwell City OfID314001374,000Ground waterCurrent monitoring/reporting flag
Idaho Falls City OfID710003969,450Ground waterNo current violation flagged
Pocatello City OfID603004358,231Ground waterNo current violation flagged
Twin Falls City OfID542005856,121Ground waterNo current violation flagged
Coeur D Alene City OfID128005354,115Ground waterNo current violation flagged
Rexburg City OfID733002240,695Ground waterNo current violation flagged
Kuna City OfID401008532,038Ground waterNo current violation flagged
Moscow Water DeptID229002326,000Ground waterNo current violation flagged
Falls Water Company IncID710003022,650Ground waterNo current violation flagged
Post Falls City OfID128014720,285Ground waterNo current violation flagged
Lewiston Orchards Irrigation DistID235001520,000Ground waterNo current violation flagged
Ammon City OfID710000417,338Ground waterNo current violation flagged
Chubbuck City OfID603000815,842Ground waterCurrent monitoring/reporting flag
Lewiston City OfID235001415,001Surface waterCurrent monitoring/reporting flag
Mountain Home, City OfID420003214,651Ground waterCurrent monitoring/reporting flag
Star Sewer And Water Dist Water SystemID401022014,000Ground waterNo current violation flagged
Blackfoot City OfID606000713,224Ground waterCurrent monitoring/reporting flag
Middleton City OfID314007413,190Ground waterNo current violation flagged
Jerome City OfID527001113,135Ground waterCurrent monitoring/reporting flag
Garden City Water And Sewer SystemID401006612,500Ground waterNo current violation flagged
Sandpoint Public Works DeptID109012112,284Surface waterNo current violation flagged
East Greenacres Irrigation DistID128006411,165Ground waterNo current violation flagged
Rathdrum City OfID128015210,358Ground waterCurrent monitoring/reporting flag
Burley Water DeptID516000810,345Ground waterNo current violation flagged
Hayden Lake Irrigation DistID12800879,375Ground waterNo current violation flagged
Capitol Water CorpID40100229,000Ground waterCurrent serious-violator flag
Ross Point Water DistID12801638,965Ground waterNo current violation flagged
Avondale Irrigation DistID12800088,785Ground waterNo current violation flagged
University Of IdahoID22900428,589Ground waterNo current violation flagged
Payette City OfID33800098,127Ground waterNo current violation flagged
Hailey Water And SewerID50700228,000Ground waterNo current violation flagged
Mountain Home Air Force BaseID42000547,500Ground waterNo current violation flagged
Fruitland City OfID33800057,458Surface waterCurrent serious-violator flag
Emmett City OfID32300126,700Ground waterNo current violation flagged
Eagle, City Of (Western Zone)ID40102226,108Ground waterNo current violation flagged
Central Shoshone County Water DistID14000896,098Groundwater under influence of surface waterNo current violation flagged
Rupert City OfID53400175,796Ground waterCurrent monitoring/reporting flag
Weiser City OfID34400115,630Surface waterNo current violation flagged
Preston City OfID62100145,591Ground waterCurrent monitoring/reporting flag
Rigby City OfID72600325,400Ground waterNo current violation flagged
Kimberly City OfID54200335,359Ground waterNo current violation flagged
American Falls City OfID63900014,863Ground waterNo current violation flagged
Buhl City OfID54200074,518Ground waterNo current violation flagged
Mccall City OfID44300334,423Surface waterCurrent monitoring/reporting flag
Shelley City OfID60600714,409Ground waterNo current violation flagged
St Maries City OfID10500244,173Surface waterNo current violation flagged
Hillside Service AreaID12800954,140Ground waterNo current violation flagged
Gooding City OfID52400093,706Ground waterCurrent monitoring/reporting flag
Eagle, City Of (Eastern Zone)ID40102013,702Ground waterNo current violation flagged
St AnthonyID72200673,606Ground waterNo current violation flagged
Ketchum City OfID50700283,555Ground waterNo current violation flagged
Rimrock Service AreaID12800093,493Ground waterNo current violation flagged
Sun Valley Water And Sewer DistID50700513,400Ground waterCurrent monitoring/reporting flag
Bonners Ferry City OfID11100033,367Surface waterNo current violation flagged
Idoc Sbx ComplexID40101413,309Ground waterCurrent monitoring/reporting flag
Homedale City OfID33700123,300Ground waterNo current violation flagged
Salmon City OfID73000423,158Surface waterCurrent serious-violator flag
Grangeville Water DeptID22500233,151Ground waterCurrent serious-violator flag
Soda Springs City OfID61500173,111Ground waterNo current violation flagged
Heyburn City OfID53400063,000Ground waterNo current violation flagged
Wendell City OfID52400283,000Ground waterNo current violation flagged
Filer Water WorksID54200212,858Ground waterCurrent monitoring/reporting flag
Fort Hall1016121092,850Ground waterCurrent health-based flag
Spirit Lake City OfID12801772,825Ground waterNo current violation flagged
Montpelier City OfID60400212,772Ground waterCurrent monitoring/reporting flag
Bellevue City OfID50700042,747Ground waterCurrent health-based flag
Iona Water DeptID71000412,717Ground waterNo current violation flagged
Dalton Water Assn IncID12800592,602Ground waterNo current violation flagged