Quick Answer: Does A Septic Tank Need A Soakaway?

How long should a septic tank soakaway be?

The trenches for the soakaway should be between 300mm and 900mm wide with a distance of 2m between trenches.

A inspection chamber must be installed between the septic tank and the soakaway..

How far away should a soakaway be from the house?

five metresThe regulations state that a rainwater soakaway must be located at least five metres from the wall of a building and at least two and a half metres from a boundary. This is to prevent subsidence of the wall and to stop rainwater on your property flowing into your neighbour’s garden.

Can rainwater go into a septic tank?

Septic tanks are not designed to receive rainwater and care should be taken to ensure that any downpipes or surface water gully’s do not enter the drainage connected to the septic tank. The size of a septic tank is based on the volume of sewage draining to the tank.

What to fill a soakaway with?

Always cover the soakaway crates with a geotextile membrane to maintain the performance of the system. A layer of sharp sand or pea gravel should be put into place before the crates are lowered in, then the geotextile membrane should be fitted inside the hole, ready for the soakaway crates to sit on top of.

What is the difference between septic tank and soakaway?

A soakaway is a hole dug in the ground and filled with rubble and coarse stones, designed to disperse water back into the surrounding ground without flooding. A septic tank has two chambers and is buried underground in the same way as a cesspit. … Blockages can cause flooding.

Do you need a soakaway?

To try and ensure water is dispersed into the ground evenly and quickly you must consider the use of a soakaway in all cases. You must use a soakaway if design criteria can be met. Discharging stormwater into a drain will only be allowed if soakaways or other infiltration methods are not suitable.

Can a soakaway get blocked?

Can a soakaway get blocked? The main problem people experience with soakaways is that they can become blocked up with silt, leaves etc which have washed into the soakaway and can prevent the rain water being collected and percolated back into the soil.

What is better a cesspool or septic tank?

Cesspool vs septic tank: cesspools are holes in the ground that dump scum and liquid wastewater into a small area while septic tanks hold the scum and spread out the liquid wastewater over a wider area. … For this reason, septic tanks are better for the environment and people than cesspools.

What is a rainwater soakaway?

Soakaways are a traditional way of disposing of surface water from buildings remote from a suitable public sewer or watercourse. Soakaways are generally formed from square or circular pits, filled with rubble or lined with dry jointed masonry or perforated concrete ring units. …

How long does a soakaway last?

100 yearsHow Long Do Soakaways Last? They should last the life of the house, at least 100 years but only if installed correctly and filters are used to prevent leaves and other material clogging the soakaway.

Can you put a soakaway in clay?

A soakaway is basically a deep hole filled with rubble. To work, it must extend below the clay and be at least 1.8m deep. Dig a series of parallel trenches every 3-6m across the garden, sloping towards the ditch or soakaway.

How do I know if my house has a soakaway?

The easiest way to find a soakaway is to follow the rainwater downpipes from your house and see how far they go. Often, the downpipes from your home will lead to a sunken area on your lawn. You need to be eagle-eyed, however, as soakaways are installed discreetly, so they can be hard to find.

Can I put surface water into sewer?

Connections. We’ll only accept surface water (rain water) into a public sewer if there are no alternative options. If there are both foul and surface water sewer in the vicinity which can be used then you must make 2 separate connections. … The most common option for surface water drainage is a soakaway.