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Diagram of a Septic Tank installation

Useful Information (PDFs):
BioDisc systems explained
Operation of Klargester Septic Tanks

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Tank Information for Customers

How do cesspits work?
CesspitCesspits may vary in shape and size and are usually discreetly placed underground with only a single manhole cover declaring their whereabouts. Many older properties may have cesspits made of traditional brick unless they have been replaced; modern tanks are generally made from fibreglass and other modern materials.

Cesspits are in the form of a sealed tank, which takes all of the property's liquid waste including waste from sinks, baths, showers as well as toilets. As the cesspits are completely sealed apart from the manhole, they will need to be emptied on a very frequent basis to avoid problems occurring.

Cesspits are usually installed in preference to septic tanks because of ground conditions or to remove the potential of pollution.

How often will I need my cesspit emptying?
The frequency will depend on factors such as; size of property, size of tank, number of occupants and the general usage such as the amount of people bathing or showering everyday and  how often the washing machine and or dishwasher is used.

How should I care for my cesspit?
Have the tank emptied on a regular basis this is easy and simple to arrange using our Prebook Service
Don’t allow flammable liquids to enter the system
Keep the service area (manhole) free from overgrown plants.
Cesspits are easy to manage and following the advice below will help to avoid some potential problems. But be aware of the following;

A leaking tank can pollute nearby land and water any leakage should be dealt with quickly, leakages can be caused by a damaged or full tank contact us for further advice on  0800 731 9221

How do Septic Tanks work?
Septic tankA typical household septic system consists of two major components: the septic tank and the soakaway. Wastewater, in most cases, by gravity to the septic tank. The tank’s main purpose is to detain the wastewater for 1 - 2 days. It uses this time to separate solids, greases, oils, and floating objects from the wastewater bacteria within the tank starts to attack and break down the waste immediately.

Although the bacteria does a good job, it can't eat everything. Septic tanks develop a layered look. Scum floats on the top, partially treated wastewater is in the middle, and sludge settles at the bottom.
After its 1 – 2 day stay, the partially treated wastewater leaves the tank. If everything is working right, virtually all of the solids have settled out of the water. The wastewater now heads for the drain field. This area is comprised of a series of interconnected pipes that lie in sand or gravel filled trenches. The pipes are perforated. The wastewater exits the perforations and enters the soil. The soil acts as a biological filter. Oxygen and organisms in the soil combine to break down any remaining toxins, bacteria, or viruses in the wastewater.

Septic tanks must be sized in accordance with the The number of people in the household. Tanks with too little capacity allow the wastewater to enter the drain field too quickly. Solid particles that were supposed to settle into the tank are inadvertently carried into the drain field. These tiny solid particles can clog the sand, gravel and soil filters in the drain field. If this happens, your septic tank can backup and/or the drain field can become flooded with untreated wastewater. Both of these situations are unsanitary and pose serious health risks to you and the environment.

You can extend the life of your entire septic system by watching what you put into your drains and toilet. Minimize the introduction of solid particles and scum forming compounds. This means no food scraps, coffee grinds, sand, gravel, greases, oils, washing machine lint, etc. Beware of chemicals or solvents that will kill the helpful bacteria in your tank.  Finally, have your septic system inspected annually and emptied on a regular basis. Remember, the sludge and scum must not be allowed to accumulate. If they enter the drain field, you will have an expensive repair bill. For further advice contact us on  0800 731 9221

How often should my septic tank have the solids removed/be emptied?
Like cesspits this will depend on the size and usage, but a minimum of once a year is important. To avoid problems future. If the water table is high due to very wet weather then your tank could fill via the soakaway almost immediately after emptying.

How do I know it needs emptying?
If the tank needs emptying you may sell an unpleasant odour.