Soakpits are holes in the ground
that allow the percolation of
wastewater into the surrounding
soil; the success of soakaway
depends on percolation of the
soil; commonly between two
and five metres deep and 1 to
2.5 metres in diameter; can be
lined or filled with stones,
blocks or bricks to support pit
walls.
Soak pits are
easy and
relatively quick
to construct; can
be used on flat
sites.
Soakpits are only
appropriate in
permeable ground
conditions; can only
cope with a limited
volume of
wastewater.
Infiltration
trenches
Infiltration trenches are
constructed from porous pipes