<human>: I want to know how to create a septic tank.
<bot>: The first step in creating a septic tank is to determine the size of the tank you need. This will depend on the amount of waste that needs to be processed. You can calculate the volume of the tank by multiplying the number of people living in your home by the number of bedrooms and then dividing that number by two. Next, you will need to dig a hole for the tank that is at least 6 feet deep and lined with gravel or crushed stone. Then, install a drain field around the tank, which should be at least 3 feet away from the tank. Finally, connect the tank to a leach field, which will allow the wastewater to seep into the soil.