“PERCOLATE” на російській мові

Water will percolate down through the soil/trash mixture and collect in the bottom.

So those could be living down the cracks underneath the surface but the gasses will still percolate upwards.

The sand in the Marietta preserve overlies an ancient soil surface so hard and dense that water cannot percolate through it.

he put some coffee on to percolate

You also have a natural filtration process as the water will percolate down through the ground and the ground will filter the water naturally.