A private waste disposal system includes three major components known as _____________.

The correct answer identifies the three major components of a private waste disposal system, which are the septic tank, distribution box, and leaching field.

The septic tank serves as the initial holding chamber where wastewater is held, allowing solids to settle to the bottom while liquids flow out. It plays a crucial role in the separation of solids and liquids, beginning the treatment process.

The distribution box is the component that evenly distributes the effluent coming from the septic tank to the various sections of the leaching field. This ensures that the wastewater is spread out over a wide area for effective infiltration and treatment by soil microbes.

The leaching field, also known as the drain field, is where the treated effluent is further filtered and dispersed into the soil. The soil acts as a natural filter, treating the wastewater before it reaches the groundwater. This component is vital for preventing contamination of local water sources.

Understanding these parts and their functions helps clarify how private waste disposal systems operate and underscores the significance of each component in maintaining sanitary conditions and protecting the environment.