On 27 Sep, 17:49, "clot" wrote:
None wrote:
On 27 Sep, 17:34, "clot" wrote:
None wrote:
On 27 Sep, 17:08, "clot" wrote:
None wrote:
On 27 Sep, 16:17, "clot" wrote:
None wrote:
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!

Good, you've eliminated that as an issue! I just wondered whether this
was a significant deadleg that could be a cause of the problem. It's
frequency of use seems to eliminate it as well. I can appreciate why you
get the best flushing effect when the pressure is high - that makes
sense. You will be able to slough off a greater amount of film that may
be developing in both the main and service pipe.

I guess the neighbours have got used to your midnight capers in the
garden!

Any opinion on whether I should go the 'disinfecting of service pipe
route?' It seems as if it is possible to do this, hard work, but not
expensive. With the plentiful amount of houses around the
neighbourhood and the road, the main surely gets enough flow to clean
it pretty well.