Hoping somebody can advise - I've noticed the sound of running water
from the pipes inside the house. Like the washing machine is on and
drawing from the mains.
I've stopped the water supply and drained everything off, in case of
an air lock - can still hear the noise however. Haven't noticed any
leaks (and the central heating pressure is constant), before calling a
plumber out - has anybody got any tips or suggestions as to what it
could be or to try ?
"Jonathan Homer" wrote
Do you have a water meter?
If so, turn everything off in the house.
Then examine the meter gauge closely. On ours there is a little
needle-pointer thingy which rotates.
This is a far more accurate way of noticing small rates of flow than trying
to make out movement of the digital counter.
From what you say about heating, I assume there are no water storage tanks
in your install.
These can continue filling long after demand is removed.
Finally get a long handled screw driver, put blade on pipe and ear on handle
"Listening" for leaks can help with location - not sure if it will work on
plastic though :(
If it is a leak on the mains, it will not necessarily stop the moment you
turn off the water supply!
If you have a small leak low down in your system, then water will continue
to escape until the level of water reaches the leak point.
But you should notice a slowing of the leak indicated by a change in noise
made by escaping water - may take a few minutes though.
Check all overflow outlets are present, correct (not running water).
Check the bottom of cavity walls are dry, overflow can sometimes run
back and thus through a large hole dump water down the outer or inner
leaf of the cavity wall.
If not solid floors examine UNDER the floorboards for any CW supply
pipe damage or other problem.
Check guttering is not blocked at some point, re holding back water
which drains slowly.
Water pipe "whining" can be neighbours drawing water which resonates
through your piping if on a shared supply - that supply pipe may be
leaking somewhere causing the noise, it is not always obvious on the
surface depending on sub-soil.
Yes water supply pipe should be suspected if you find nothing obvious
indoors (Rad header ball cock is quite possible if you have an under ground
floor leak in a ch pipe - ours was the drain cock.). I sat in the bath
puzzling about rushing water sounds some years back, and eventually
rusty/muddy water from the cold tap gave the hint. The local water co had
increased the pressure, and all the original iron supply pipes in the street
went, one house after another. Having no readies at the time I spent
several days digging it out by hand (and puncturing the neighbour's plastic
pipe - about 4" deep and on my side!) while I was at it! (The pros in the
rest of the street used a mole.)
Actually we've been wondering about rushing water noises again lately too.
I was hoping it is someone elses...