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What is the difference between a Drainage Field and a Soakaway?


A drainage field/leachfield is specifically engineered to provide additional treatment to wastewater before it is released into the surrounding environment. This system typically allows effluent to pass through a series of perforated pipes or chambers that are strategically placed within a gravel or aggregate bed. As the water travels through the system, natural filtration processes remove contaminants, ensuring that the water entering the soil is treated to a safe standard.


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In contrast, a soakaway is primarily designed for stormwater management. Its function is to temporarily store excess surface water, such as that generated by heavy rainfall, and gradually release it into the ground. Soakaways are typically deeper structures that allow the collected water to percolate through the soil over time, reducing the risk of flooding and alleviating pressure on drainage systems during periods of intense precipitation.






In summary, while both systems help manage water, a drainage field focuses on wastewater treatment, whereas a soakaway is intended for water storage and gradual infiltration.