BRE365 testing.At a fixed price.
Your price is fixed, however long the test takes. We dig the pit, bring the water and monitor it with our own Percologger. Follow the readings as the ground drains, then receive your report the next day after testing is complete and we leave site.
Good testing takes the time the ground needs.
Some ground lets water through quickly. Other ground takes much longer. We agree your fixed testing price before booking, so the time it takes to drain does not increase your bill.
We designed and manufacture our own Percologger to follow that process. It records the falling water level and relays progress to the office, so we can plan the next fill around the test.
Once testing is complete and we leave site, your report follows the next day, ready to share with your drainage designer.
What the fixed quote coversWe dig. We fill. The Percologger follows the fall.
A connected test from the first visit to the final readings. Scroll through the stages, or choose a step to see what happens.
We excavate the trial pit at the agreed location and depth, recording the dimensions and ground conditions needed to interpret the test.
Our Percologger monitors the level as water soaks into the ground. Readings are relayed to the office and shared with you while the test progresses.
When a test reaches its finish checkpoint, the logger alerts the office. We arrange the return fill and repeat the required cycles before reviewing the results.
See the ground at work.
Follow the water level, see how the infiltration coefficient is calculated and understand why the office knows when it is time to return.
Example readings to explain the process, not a live site. Final results are reviewed before reporting.
On a real test, live updates depend on site connectivity. Measured readings, developing estimates and the reviewed final result are kept distinct.
Slow-draining ground. The same agreed price.
Your price is fixed, however long the test takes. Slow-draining ground does not mean a bigger testing bill. Our Percologger lets us monitor the test while it runs and arrange the return fills.
We confirm test locations and depths, access, water, reporting and reinstatement in the quotation. Changes to the agreed scope are discussed and agreed separately.
- Trial pit excavation and recorded dimensions
- Water fills and the planned return visits
- Percologger setup and monitoring
- Recorded results and the infiltration report
Example report coverYour report, the next day.
Once testing is complete and we have left site, your report follows the next day. It brings the site observations, measured readings and infiltration calculation together for your designer.
- The test location and groundPit dimensions, depths, observations and the recorded site conditions.
- The fall, recorded over timeWater-level readings and the repeated fill-and-drain cycles, with any gaps or limitations explained.
- The infiltration resultThe calculation and the evidence supporting it. Incomplete results and estimates are identified clearly.
Before we dig.
Tell us what you are planning and what your designer has requested. We will confirm the right test and the fixed price.
For a sewage treatment plant or septic tank, see drainage field testing.
Method reference: BRE Digest 365: Soakaway design. Testing informs the drainage design; it does not itself guarantee approval.
Does the price change if the ground drains slowly?
No. Your price is fixed, however long the agreed test takes. We confirm the test locations, depths, access, water, report and reinstatement in your quotation before booking. Any change to that scope is discussed and agreed separately.
How long will my BRE365 test take?
It depends on the ground and how long the required fill-and-drain cycles take. We cannot promise a finish time before testing. The Percologger records progress while the ground drains, so the office can plan the next visit around the readings.
When will I receive my report?
Your report follows the next day after testing is complete and we leave site. This means the day after the final testing visit, once the required test cycles are complete.
Can I follow the readings while the test is running?
Yes. Our Percologger relays readings to the office, and we share the test progress with you. You can see the water level falling and follow the available infiltration calculations. Live updates depend on the site connection. A developing calculation or finish estimate is kept separate from the checked final result.
Who digs the pit and brings the water?
We arrange the excavation, water fills and Percologger setup for the agreed test. We plan return fills as part of the quotation. Please tell us about site access, buried services, the proposed test positions and any restrictions so these can be allowed for before booking.
Will a BRE365 test guarantee that a soakaway can be installed?
No. It provides site-specific infiltration evidence for the drainage designer. Suitability also depends on groundwater, location, available space, contamination risk and the proposed drainage design. If the results are incomplete or infiltration is poor, the report explains that rather than presenting an unsupported design value.
Is this the right test for a sewage treatment plant drainage field?
This page covers rainwater soakaway infiltration testing using the BRE Digest 365 method. Foul-water drainage fields use a different assessment. See our drainage field testing service or tell us what your designer has specified so we can quote for the correct work.
Let’s find out what your ground can do.
Tell us about your site for a fixed-price quotation. However long the test takes, the price stays fixed. Your report follows the next day after testing is complete and we leave site.