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Default Replacing Rising Main?

On 27 Sep, 17:34, "clot" wrote:
None wrote:
On 27 Sep, 17:08, "clot" wrote:
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On 27 Sep, 16:17, "clot" wrote:
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On 27 Sep, 00:16, "clot" wrote:
None wrote:


snip



Hi clot,
Yeah I didnt actually check your name either, lol. Anyway, would an
air scour involve much disruption to the road? Our neighbours are
very closely all around us too, so I don't really think that there
would be much difference in our chlorine content tbh. The water
depot doesn't accept that we have a problem, saying our test
results back in June were 'clear.' The chlorine tested very, very
low, and that was no surprise as you can never smell or taste it
really.


Would it even be possible to air scour our individual service pipe
though?


Hi,


I honestly don't know I'm afraid. Might be time to do some googling
for "air scour"/ plumbing contractors and the like. I've just been
googling for chlorine guidelines in E&W and could not find anything
- must admit I didn't go into every crevice. It does not appear that
the chlorine issue has not moved on since I was involved in the
potable supplies side of things.


I seem to remember that we set a standard of either 0.4 or 0.6 mg/l
leaving the treatment works and from samples in customers' taps would
expect a concentration of 0.1 mg/l as a minimum. At the level you are
quoting, I would be concerned about the potential for bacterial
growth. What did the water dept. say about 0.02? Do they have
internal target minima? I would be leaning on Dublin's water dept.
with that sort of concentration.


They dismissed my notion of introducing a chlorine booster in the
area, didn't even comment on it really. We have no water votes or laws
here it seems. It depends where you live I suppose. It seems I got
spectacularly unlucky on this one. What is strange is that the quality
can be good, but only after I turn off the outside stopcock, pull out
the washing machine hose in the garden shed, go back out front and
open the stopcock again.


Can you explain this bit in more detail? The washing machine is in the
shed - how is it fed? Length and diameter of pipe? Do you mean the
flexible cold supply hose? How often is this used and any other details
that seem relevant.


The washing machine is fed from the mains, is the last point of use
for the water downstairs, and is used at least once a day. It was only
installed there back in February, and we were having the same problems
beforehand. Yes, Im talking about a flexible cold supply hose attached
to the main line.

Back in December, I was replacing the old washing machine, and a load
of dark crud came out of the inlet cold pipe feed to it. It was then
that I began flushing out this pipe (originally into the kitchen sink,
when it was located beside it), now I flush it out into the flower bed
in the garden.

It helps to do this more when the water pressure is at its highest,
late at night. I suppose this doesn't make much sense in the grand
scheme of things though!