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Graf Herkules Mini Septic Tank 1600L

£690.00 EX VAT

This small septic tank is lightweight yet durable.

SKU: G50187 Categories: ,


This mini septic tank is suitable for a building with intermittent usage such as a garden room.

Key benefits:

  • Durably sealed thanks to solid profile sealing (Sealing life-time of more than 25 years proven in laboratory tests)
  • Can be extended as desired
  • Stability tested according to European standard (DIN EN 12566-1)
  • Construction approved by DIBt for domestic wastewater
  • Groundwater stable
  • Fits through any door (80 cm) – each half shell weighs just 30 kg
  • Tanks can be used as rainwater harvesting systems after thorough cleaning

This Mini Septic Tank kit includes as standard:

  • 1 Herkules tank
  • Tank dome
  • Support pipework with caps and elbow
  • Seal
  • Extension set

Please note: this tank does not meet regulation for use on a permanent residence as it is too small.

Offloading is the responsibility of the customer

For information on Drainage Fields take a look at the British Water Code of Practice (opens in a new tab).

Additional information

Height mm


Diameter mm


Approx. Tank Weight (empty) - kg


Number of people


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