Septic Tank Companies in Idaho
96 septic service companies across 45 cities — approximately 30% of Idaho homes use septic systems
Idaho's septic systems are regulated by the Idaho Department of Environmental Quality (IDEQ) under the state's Individual/Subsurface Sewage Disposal Rules (IDAPA 58.01.03), with permitting administered by the seven regional health districts that cover the state's 44 counties. Idaho's diverse terrain — from the volcanic basalt plains of the Snake River Valley to the granite mountains of the Idaho Batholith in the central wilderness — creates highly variable soil and drainage conditions. Rapid population growth in the Treasure Valley (Ada and Canyon counties) and Kootenai County around Coeur d'Alene has put pressure on groundwater quality in areas heavily dependent on septic systems and private wells.