Use code SEWAGE5 for 5% off spare parts orders over £250

Septic Tanks

Septic tanks are designed to connect to a drainage field (soakaway), which is a series of slotted pipework constructed underground.

Sewage enters the tank and the solids settle to the bottom. The liquid rises to the top, making contact with oxygen which starts to break down the organic matter biologically. The liquid still contains sewage, but in small enough particles to be carried into the soakaway, which then drains into the soil for further anaerobic treatment.
Browse our extensive range of septic tanks below, and if you have any questions, check out the Septic Tanks section on our Direct Drainage Knowledge Base.
If you need any more information, give our team a call on 01388 537050 or email sales@direct-drainage.co.uk
Customers are responsible for arranging offloading, HIAB options are available for certain products upon request. Please let us know when ordering of any restrictions regarding delivery. Please note we can only deliver septic tanks to the mainland UK.
13 products
Klargester Sigma Shallow Dig Septic Tank 2800L
Klargester Sigma Shallow Dig Septic Tank 2800L
Klargester
£1,164.00
£1,164.00
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Klargester Alpha Septic Tank 2800l (Up to 5 person)
Klargester Alpha Septic Tank 2800l (Up to 5 person)
Klargester
£930.00
£863.00
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Klargester Gamma Septic Tank 2800L (single stage)
Klargester Gamma Septic Tank 2800L (single stage)
Klargester
£1,252.00
£1,178.00
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Klargester Gamma Septic Tank 2800L (twin stage)
Klargester Gamma Septic Tank 2800L (twin stage)
Klargester
£1,269.00
£1,269.00
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Klargester Gamma Septic Tank 3500L (single stage)
Klargester Gamma Septic Tank 3500L (single stage)
Klargester
£1,465.00
£1,326.00
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Klargester Gamma Septic Tank 3500L (twin stage)
Klargester Gamma Septic Tank 3500L (twin stage)
Klargester
£1,454.00
£1,454.00
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Klargester Sigma Shallow Dig Septic Tank 3800L
Klargester Sigma Shallow Dig Septic Tank 3800L
Klargester
£1,394.00
£1,394.00
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Klargester Alpha Septic Tank 3800l (up to 12 person)
Klargester Alpha Septic Tank 3800l (up to 12 person)
Klargester
£1,128.00
£1,043.00
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Klargester Gamma Septic Tank 4000L (single stage)
Klargester Gamma Septic Tank 4000L (single stage)
Klargester
£1,463.00
£1,463.00
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Klargester Gamma Septic Tank 4000L (twin stage)
Klargester Gamma Septic Tank 4000L (twin stage)
Klargester
£1,619.00
£1,619.00
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Klargester Sigma Shallow Dig Septic Tank 5700L
Klargester Sigma Shallow Dig Septic Tank 5700L
Klargester
£1,756.00
£1,756.00
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Klargester Sigma Shallow Dig Septic Tank 7150L
Klargester Sigma Shallow Dig Septic Tank 7150L
Klargester
£2,158.00
£2,158.00
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Klargester Sigma Shallow Dig Septic Tank 9150L
Klargester Sigma Shallow Dig Septic Tank 9150L
Klargester
£2,454.00
£2,454.00
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