An underground tank providing basic settlement treatment where no mains sewer is available, discharging the liquid to a drainage field. Rare inside London, more common on its fringes.
What it means for you
Septic systems are governed by discharge rules and need regular emptying and inspection to stay compliant.
Not sure whether this applies to your property? Ask us. There is no call-out charge and the price is fixed before any work starts.
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