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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
o
riginal soil.
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
to the environment.
M
aintenance:
• 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.
OBSERVATION
PORT
as it flows through and moves
g water.
GROUND SURFACE
LATERAL LINE
GRAVEL UNDER PIPE
ORIGINAL SOIL
- 49 -
or bed and into the
mum.
.
to
etween
of
.
IN
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