70s detached bungalow.
I have recently been having trouble with a suspected blocked WC.
no luck with finding any internal obstructions, I opened the
inspection chamber nearest the house. This is the one that the bath
and WC flow into. The inspection chamber has a concrete access panel
and must be about 1m deep.
It was nearly full to the top with mucky water.
I shoved my hand in and spooned out a shedload of toilet paper. The
water level didn't drop when I did this.
Using a length of batten, I reached under the mucky water and ensured
that the inlet and exit pipe of the chamber were not obstructed. They
I then opened a 2nd chamber, further from the house, nearer the road.
That too was almost full to the brim. Again I removed a load of toilet
paper and ensured the inlet and outlet were not obstructed. The water
level did not drop.
Finally, I opened a 3rd chamber, the one nearest the road. This was
half full and with reasonably clear water.
Questions: How high should the water level be in an inspection
chamber? Should the inlet and outlet pipes be visible? If there is
heavy rainfall, will surface water fill them up?
Maybe I have an obstruction between chambers 2 and 3?
But bath, basin, sink and washing machine all seem to drain OK. There
is no water backing up into the house.
- posted 12 years ago