What is a Soakaway pit and septic tank?

Soakaway pits, also known as dry wells, are underground systems used to allow rainfall to infiltrate into the ground. The downspout is connected to an underground pit lined with gravel or coarse materials. The layers of gravel help to slow down the infiltration.Infiltration is the process of water soaking into the soil where it becomes available for recharge or transpiration. of water and also to clean and purify it naturally. Soakaway pits require relatively clean water with some pre-filtering to prevent debris from clogging the system, so they usually only accept rainfall from roofs through a downspout.