When a soakaway becomes full, it can lead to various issues and disruptions in the drainage system. A soakaway, also known as a drainage field or leach field, is designed to absorb and disperse excess water from septic tanks or surface drainage systems into the surrounding soil. When a soakaway reaches its capacity, it may no longer be able to absorb water effectively. As a result, the excess water can pool on the surface, causing waterlogging or flooding in the surrounding area. This can lead to unpleasant odors, soggy ground, and potential damage to nearby structures or landscaping.