At Soakage Testing, we provide accurate and professional soil infiltration tests to determine drainage suitability for residential, commercial, and large-scale development projects in Barking and across the UK.

Our soakage tests follow BRE 365, SuDS, and building regulations, ensuring compliance for planning applications, soakaway installations, and flood prevention strategies.

Whether you’re installing a drainage system or need approval for construction, our specialist testing services help you make informed decisions.

What Is Soakage Testing And Why Is It Important?

Soakage testing, also known as a percolation test, measures how quickly water drains through the soil. This particular test helps determine whether a soakaway system or other sustainable drainage solution (SuDS) can be installed.

It is important for preventing flooding, improving drainage efficiency, and securing planning permission for construction projects. Without accurate soakage data, property owners may face waterlogging issues, regulatory delays, or ineffective drainage systems.

When Is A Soakage Test Required?

A soakage test is required in several situations, including new soakaway or drainage system installations, planning applications for residential and commercial developments, and projects addressing poor drainage or flood risks.

If your property experiences waterlogging, slow drainage, or pooling rainwater, a soakage test can help determine the best solution. Many local authorities require BRE 365-compliant soakage tests before approving construction, landscaping, or drainage modifications.

What Is The Process For Conducting A Soakage Test?

The soakage test process starts with site preparation and excavation of a test pit at the proposed soakaway location. Water is then filled into the pit, and its infiltration rate is measured at regular intervals.

The test is repeated three times to establish an accurate infiltration rate. Data is recorded and analysed according to BRE 365 and Building Regulations, and results are compiled into a detailed report for planning authorities or drainage designers.

How Much Does Soakage Testing Cost?

The cost of soakage testing ranges between £300 and £800, while larger-scale commercial projects may range from £1,000 to £3,000+.

Additional costs may include specialist equipment, multiple test pits, extra site visits, and planning application reporting. Complex sites with low-permeability soil may require further analysis or alternative drainage solutions, which can impact the total cost.

Contact Soakage Testing to get customised prices for soakage testing on your premises.

How Long Does A Soakage Test Take?

A soakage test usually takes between 3 to 8 hours, depending on soil conditions and weather factors. In well-draining sandy or loamy soils, results can be obtained within a few hours. However, in clay-rich or compacted soil, water absorption can take longer, sometimes requiring multiple site visits.

Accurate results depend on proper test setup, controlled conditions, and expert analysis, ensuring compliance with planning and environmental regulations.

What Are The Regulations For Soakage Testing?

Soakage testing must comply with BRE 365, building regulations, and SuDS guidelines to ensure that soakaway drainage systems are effective.

Most local authorities require a minimum infiltration rate for soakaways to be approved as a drainage solution. Planning reports must include detailed test results, percolation rates, and site-specific recommendations. Developers must also adhere to flood risk assessments and environmental impact regulations when implementing drainage systems.

What If My Site Fails A Soakage Test?

If a site fails a soakage test, alternative drainage solutions such as attenuation tanks, French drains, or permeable paving may be required. In some cases, soil improvement techniques such as deep excavation, additional filtration layers, or adjusting the soakaway design can improve infiltration rates.

For construction projects, failing a soakage test may require further site assessments or modifications to the proposed drainage strategy before planning approval can be granted.

Contact Soakage Testing for professional soakage testing and drainage assessments.

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