Mound
Description:
A mound consists of an elevated drainfield bed installed in a large sand berm.
The pressure drainfield in the mound consists of a network of small diamete
pipes. Effluent is pumped to the pipes under pressure and a manifold is used to
split the flow evenly between multiple lines. The effluent is sprayed out of the
pipes through a series of small holes
r
, then it moves down through the filter sand
r treatment.
r treatment. Microbes consume most pollution out of the water as
flows through to the underlying original soil for dispersal.
aintenance:
accessible.
from
sloughing. DO NOT FILL around mound to make it level.
•
Check surface of mound for soggy spots or breakouts.
•
See Sections 1 & 2 for more information on protecting your drainfield.
fo
Function:
The function of the mound is to clean the wastewater to a high level before
passing it into the underlying soil. The mound sand provides an oxygen-rich
surface area fo
it
M
•
Mounds should be checked every 3 years by a certified O&M provider.
Homeowners should check the system annually.
•
Check observation ports for ponding water.
•
Have laterals flushed as needed.
•
Clear mound of large vegetation & ensure ports are
•
Ensure the mound’s shape is maintained. Plant grass, etc. to keep sand
CLEANOUT &
OBSERVATION PORT
DRAINFIELD TRENCH
LATERAL
LINE
FILTER SAND
EDGE OF
MOUND
ORIGINAL GROUND LEVEL
FINISHED MOUND SURFACE
IN
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