Know the testing protocols
Before hiring a private inspection firm, you
should request information about the testing
protocols the firm will be using. Overly
aggressive testing can destroy a perfectly good
sewage system. In fact, aggressive testing
has ruined many systems. Conversely, some
private inspection firms employ protocols as
simple as walking around the system to look for
leaks. Finding none they approve the system.
These latter firms do a great disservice to
those relying on their report.
Improper testing
should be a concern to both the seller and the
buyer. Obviously, the seller does not want the
system destroyed by the inspection firm as it
would often result in the buyer backing out of
the deal and the seller being left with
expensive repair bills. Improper testing does
not always destroy the system immediately. Often
it sets forth a chain of events that results in
failure a week, months, or even a year after
testing. Therefore the house buyer should also
be concerned with the problem of overly
aggressive testing.
At minimum, the
inspection protocol should include the
following:
[Note: The sewage
system may not have all the components listed below]
Septic Tank
– How much check the scum and sludge is the tank.
-
Are
baffles intact?
-
Is the
tank structurally sound?
-
Is there
any sign of groundwater infiltration?
Aerobic Tank
– same as septic tank, plus…
-
Is the
electrical/mechanical system operating correctly?
Dosing Tank
– Is there any sign of sludge or grease in the
tank?
-
Is there
any sign of groundwater infiltration?
-
Is the
tank structurally sound?
-
Are the
pump and floats operating correctly?
-
Is the
pump pumping the effluent at the proper speed based
on the pump performance chart and the absorption
area configuration?
Distribution
box – Is the box
structurally sound?
-
Is the box
level?
-
Are all
the laterals receiving an equal volume of effluent?
-
Is there
any sign of groundwater leakage?
Absorption Area
– Is there any sign of effluent leakage?
- Is there
erosion or soil settling?
-
Is the bed
covered with inappropriate vegetation?
-
Is there
sludge/grease in the aggregate?
-
Is there
effluent ponding within the aggregate?
Electrical
– All wiring and
electrical components should be inspected by a
competent electrical inspector.
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