What is a Cesspit?

Whether you have a property, or are looking to buy or rent one with ‘off mains drainage’ it is important to understand what type of sewage system you have and the necessary maintenance involved.

A cesspit is basically a holding tank. It has an inlet which takes the waste from your toilets, sinks baths etc. a cesspit has no outlet so will store this waste and will require frequent emptying. How regularly you need to empty your cesspit is dependent on the size or capacity of the cesspit, the number of occupants living at the property and your overall use.

Failing to properly maintain your cesspit can have disastrous effects on the environment around you. make sure you are instructing an established, respected and fully licenced waste carrier, like Clearmasters, to look after your sewage system.

How quickly will my cesspit fill up?

Move the slider to the number of people living in the house to see an estimate based on the British Water Association calculations.

Number of people living in the house:
Total estimated litres per day:

Based on your selection, on average it would take a 13,638L (3000 gallons) cesspit approximately days to fill up.

More than 1 property going into your cesspit?

The calculation gets a little more complicated, but not impossible. give us a call with details of your circumstances and we will give you the figures.


Why choose clearmasters
for your cesspit maintenance?

Quite simply, we are the best!

We are always on hand, whether it be a routine visit, or an emergency call out to offer you the very best in cesspit emptying. We pride ourselves on having a modern fleet of vehicles containing the highest tech equipment to ensure that we can provide you with the high levels of reliability and efficiency that we constantly achieve.

Our friendly and knowledgeable office team, are always available to discuss or advise on any of your cesspit requirements or simply to schedule in your cesspit emptying at a convenient time and date that suits you.

On site, our team of dedicated, friendly and fully trained engineers will ensure that your emptying is carried out to the highest standard with minimal disruption. Our engineers are always willing and fully encouraged to spend time answering any questions you may have regarding your sewage system.

Frequently asked questions

How do i know my cesspit needs emptying?

Don't fancy opening the lid and taking a look? We don't blame you! Slow drains, nasty odours and gurgling pipes are the most common signs. We can check if your not sure.

What happens if i dont get my cesspit emptied?

Your drains will stop flowing and back up, eventually it will overflow and make a mess of your garden and damage the surrounding environment.

Do i need to worry if i am planing to get an extention done?

You need to think about the capacity of the tank, maybe a good time to look at having a septic tank or treatment plant installed whist you're at it.

I think my cesspit is leaking.

A sign of this will be pooling water, ground dipping and the grass around the cesspit growing faster than the rest. In this scenario its best to get our team out to inspect/repair.

Can i change my cesspit to something more modern?

This depends on the land/space you have but, in most cases, yes! Outlaying for a lower maintenance system could save you a lot in the long run!

Does a cesspit need to be registered?

You don't need to register your cesspit. That said, if you plan to install a new one you will need planning permission and building regulations approval.