Bre365 Percolation Test

by | Aug 29, 2023

Soakaways are one of the most efficient drainage systems out there. They’re cost-effective, simple to install and easy to maintain. However, you can’t just go ahead and have one installed in your back garden. There are tests that need to be carried out beforehand, including the Bre365 percolation test.

Here at Borehole Solutions, we have a team of drilling experts with over two decades of experience between them. We’ve lost count of the amount of soakaway projects that we’ve worked on over the years.

What is the Percolation Test?

This test is used to determine whether the ground at a development is suitable for Sustainable Urban Drainage Systems (SuDS), including soakaways. The Bre365 percolation test measures the rate at which the soil absorbs water. This will help to establish if the arising surface water that develops from the development proposals can be treated at source or if there is a potential flood risk.

These reports are commonly used as part of planning permissions, especially where SuDS are suggested. These alleviate drainage concerns by treating the runoff water or releasing it back into the network at a much lower rate.

Why are they important?

Bre365 percolation tests follow the guidance of the Building Research Establishment (BRE65). They measure how fast water drains from the ground, allowing us to calculate the best soakaway device to use. According to the policies, soakaways should discharge from fill to half-volume within 24 hours.

Planning Permission

When you apply for planning permission, the authorities may ask for a percolation test to be carried out to ensure there is no risk of flooding. This must be determined prior to the project because SuDS require space and must be positioned at least 5 metres away from a habitable building.

Understandably, developers want to make the most of their available space. Therefore, the planning authority may have to ask the client to change their project design to make space for the drainage system.

What could happen if I take the risk?

If you decide against the Bre365 test, then you run the risk of running into a number of complications down the line. This includes sudden unexpected costs, property damage, unviable drainage schemes as well as added time and frustration for both yourself and your designers.

Soakaway Maintenance

Providing your soakaway has been installed by a professional, it can remain functional for at least a century! Furthermore, they require minimal active maintenance. Nevertheless, it’s always worth checking on your soakaway every few months to ensure that no waste is clogging the system.

Contact Borehole Solutions

Borehole Solutions offer comprehensive Bre365 percolation testing, soakaway installation and a vast range of other geotechnical drilling services. If you’re interested in finding out more about us, then get in touch! Speak to the team today on 01733 200501 or click here to send us a message.