Gravity Drainfield
Description:
A gravity drainfield consists of a network of pipes under ground. Effluent flows
the pipes by gravity and a distribution box is used to split the flow evenly b
multiple lines. The effluent flows out the bottom of the pipes through a series
small holes. It then it moves down to the bottom of the trench
to
etween
or bed and into the
riginal soil.
.
as it flows through and moves
to the environment.
aintenance:
mum.
.
g water.
of
o
Function:
A gravity drainfield disposes of effluent by allowing it to absorb into the
underlying soil. The soil provides an oxygen-rich surface area for treatment
Microbes consume most pollution out of the water
in
M
•
Gravity drainfields must be checked every 5 years at a mini
Homeowner’s should inspect the system annually
•
Check observation ports for pondin
•
Clear drainfield of large vegetation & ensure ports are accessible.
•
Check drainfield area for soggy spots or breakouts.
•
See Sections 1 & 2 for more information on protecting your drainfield.
GRAVEL UNDER PIPE
GROUND SURFACE
LATERAL LINE
ORIGINAL SOIL
OBSERVATION
PORT
IN
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