A BRE365 Percolation Test (also known as an infiltration test) measures how quickly water drains through the soil. It’s an essential step in designing soakaways and sustainable drainage systems (SuDS) that comply with Building Regulations Part H and BRE Digest 365 standards.
This test determines whether the ground can absorb surface water efficiently and helps engineers size soakaways correctly to prevent flooding or surface water buildup.
What’s Involved in a BRE365 Test?
Our BRE365 Percolation Testing service provides accurate soil infiltration assessments to ensure your drainage and soakaway designs meet UK building regulations. We handle everything from site preparation to detailed reporting for full compliance and peace of mind.
- Whats Included
- Site inspection and test location assessment
- Excavation of test pits to required depth
- Controlled water filling and infiltration measurements
- Multiple tests to confirm consistency
- Professional calculation of infiltration rates
- Photographic records and site notes
- Detailed BRE365-compliant report
- Expert recommendations for soakaway and drainage design
Why You Need a BRE365 Percolation Test
They are essential when designing soakaway systems and sustainable drainage solutions.
Why do I need a BRE365 Test?
This test is a requirement under BRE Digest 365 and Building Regulations Part H, ensuring your drainage system is fully compliant before construction begins. Accurate results help prevent flooding, reduce surface water runoff, and avoid costly redesigns later in the project.
Whether you’re developing a new property, extending your home, or upgrading your drainage system, a BRE365 Percolation Test provides the data needed to design efficient, compliant, and environmentally responsible soakaway systems.