What is the cost of installing a Cesspit?

Unlike a septic tank, a cesspit is a simple unit.

In short, a cesspit is a wastewater system which holds the waste until it is full and needs to be emptied.

A septic tank is a wastewater system which not only holds the wastewater but also treats and discharges some of its contents into the environment around it (through a soakaway). This is similar to a Sewage Treatment Plant system.

If you are currently researching ” What is the cost of installing a Cesspit (Cesspool)?”, then there are a few things to consider.

The size of the tank.

The size of your cesspit (cesspool) will inevitably affect the cost.

The larger number of people living within the property, the larger the tank will need to be. It is common to think that a larger property will require a larger tank, but if it can only hold a small number of individuals, then the waste is likely to be minimal.

A small-sized cesspool can cost upwards of £1000, whereas a larger system can cost £1500+

Labour and materials.

Like most things, the materials your system is made from will unsurprisingly affect the cost of the unit. You would potentially assume that all tanks are one and the same, but this is a misconception. Our advice would be not to cut corners and invest in a unit that will give you longevity. The Septic Tank will give you a return on investment over time so make a wise choice.

There are various different companies which offer an installation service, but it is recommended that you discuss an installation with your local waste management company. They will have the best knowledge on what to avoid and the best course of action.


Overall, the simple answer to your question “What is the cost of installing a Cesspit (Cesspool)?” is: Your investment levels will vary depending on the choices made, but on average, the whole project should cost between £3000 – £6000.

If you wish to learn more about our installation services, please feel free to contact us at any time at 01646 629089 or click here to fill out one of our instant quotation forms.

Drainage and wet waste specialists

Room F1, Captain Superintendents Building, Admiralty Way, The Dockyard, Pembroke Dock SA72 6TD.
01646 629089