Septic tank size?

The size, style and construction fo your septic tank or cesspit is crucial to its performance. Correct size for a septic tank depends on the number of people using the system, which in turn is determined by the number of bedrooms in the house. The minimum septic tank size for a 4 person household is 2720 Litres, with 180 Litres added for every extra person. If the septic tank size is too small then you are likely to reduce the life of your soakaway system, as the retention time in the tank will be too short and insufficient settlement will take place.
Asked Aug 12, 2017

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