I have perimeter drain tile surrounding my house which is connected to
a drain pipe that daylights down a hill approximately 60 feet or so
from my home. Recently I recognized my sump pump was running much
more often than normal and especially so after heavy rains. Upon
investigating, I discovered water flow out the end of the drain pipe
was non-existent and this appeared to have been the case for some
I have ruled out clogging or collapse of the 4" plastic drain pipe and
my next step is to check the integrity of the connection between the
drain tile and drain pipe (where the drain tile "tees" into the drain
Does it stand to reason that if a portion of my perimeter drain had
collapsed or become clogged that some water would still find its way
down the drain pipe?
I realize if I discover the connection between the drain tile and
drain pipe is intact that the issue must lie within the perimeter
drain, but I am struggling to visualize-- short of a catastrophic
failure of the perimeter drain on either side of that connection-- why
some water would not still making its way down the drain pipe assuming
the connection was ok?
I would also appreciate some help understanding how water flows within
a perimeter drain and what the net result might be if a portion of the
drain tile either collapsed, broke, or became clogged.
You imply the perimeter drain and the sump pump
are interconnected. That would contravene up to date
building codes. It is probably worth finding out whether
yours are interconnected or not. (I once extended the
sump pump output pipe because it seemed too short,
i.e. was overloading house drainage: but needed to
dig only 20 ft. of extra trench.)
On Wed, 27 Dec 2006 20:56:59 -0500, "Don Phillipson"
Sorry for wording things such that an incorrect inference could be
made. The perimeter drain is not connected to the sump pump pit.
There is a drain feeding the pit but it comes from another source and
interestingly, the water getting into the pit is seeping through an
area just under that drain (i.e., the drain tile feeding the sump pit
is dry). I presume the water seeping (at times seemingly rushing)
into the sump pit via this avenue is primarily the built up water not
being moved away from my house via the perimeter drain/drain pipe
Coincidentally, I, too, recently extended my sump pump output pipe as
I discovered its discharge was not far enough away from my house and
was being recycled. I now have a dry well about 40 feet away into
which this now is dumped.
Get a plumber to run a camera up the line to take a look at whats up.
Costs a few bucks saves LOTS of digging.
Why drain a sump to a dry well when you have a daylight drain area?
Drywells ALWAYS clog:( worse if water flows into the drywell it can
back up into your drain system and cause a flood:(
Ideally all permiter and sumps drain to daylight without ANY pumps!
Pumps fail for all sorts of reasons somehow gravity is always
Actually, the builder has agreed to dig down and examine the drain
pipe connection to the perimeter drain. If that seems to be in order,
I have arranged to do just that-- have a plumber camera the drain tile
to see what might be going on.
Regarding the routing of the sump discharge... unfortunately, it is
discharged out of the front of my house (opposite the hill/daylight
drain pipe). It is better than the previous setup as the discharge
was running down my foundation and being recycled. I installed a sump
pit out in my yard about 4' deep and connected it with PVC pipe to the
former discharge point next to the house (ensuring a nice fall along
the way and a 90 degree turn as the water is emptied into the outdoor
pit). I drilled holes around the bottom perimeter of the "dry well",
filled it with pea gravel, and covered the top with plastic prior to
putting topsoil back over the top. Hopefully this works over the long
Jumping back behind my house again... prior to digging down and
examining the drain pipe connection to the perimeter drain, I am still
attempting to rationalize whether I would see no water flow whatsoever
out of the daylight drain if my perimeter drain had collapsed in one
area or become clogged, etc., etc. Would a breakdown of the perimeter
drain tile in one area cause all water to backup and ultimately wind
up under my house versus some water still finding its way around the
other side of the perimeter drain (other side of the "tee") and
discharging normally through the daylight drain pipe?
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