human
How does a septic tank work?
assistant
A septic tank is designed to filter wastewater from a home and break it down into its basic elements. These elements include nitrogen, phosphorus, and other organic materials that can be used by plants and microbes in the soil as nutrients. The water then flows into a drain field where it is further broken down into smaller particles before being absorbed back into the ground. This process helps keep the surrounding environment clean while also providing an important source of fertilizer for plants.