Step 2: Saturating the soil
Next you’ll need to fill your test zone hole with water. The drainage hole must be filled to the top. You can then leave this overnight to soak away as per Government drainage regulations. The next day you can complete the actual perc test.
Place a marker (you can use a tape measure of marked stick) 75mm from the top of the hole and another 75mm from the bottom. Now fill the test hole up to the brim with water and wait until it drains to the top marker.
You’ll now need to time things with a stopwatch. When the water reaches the top marker start the timer and stop it when it reaches the bottom marker. This needs to be done 3 times in both your holes.