Septic tanks and well water systems are essential for homes not connected to municipal infrastructure. Septic tanks treat wastewater and release it into the ground, while wells pump groundwater for drinking and other uses. Entities involved include septic tank manufacturers, installers, inspectors, and service companies, as well as well drillers, pump installers, and testing laboratories. Proper maintenance of these systems is crucial to prevent contamination, extend system lifespan, and ensure clean water.