"None" wrote in message
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On Oct 5, 5:43 pm, "clot" wrote:
None wrote:
On Oct 5, 12:08 pm, "clot" wrote:
None wrote:
On Oct 4, 1:52 pm, "clot" wrote:
None wrote:
On Sep 29, 5:33 pm, None wrote:
On Sep 29, 5:11 pm, wrote:

On 29 Sep,
wrote:

I would have a go at chlorine disinfection first. It is
supposed to be done on new installations, but seems to be
rarely done. I'd try taking off the internal stopcock, and
trying to feed a small plastic pipe (as used for syphoning
beer -- but longer) through the main as far as the outside
stopcock and using a funnel to fill the pipe with
chlorinated
water. There are guidelines on how long and what strength
solution to use, I think it is 100 ppm but ICBW, it's on the
web somewhere.

Found some details, it's in BS6700 if you can find it.

http://iphe.org.uk/databyte/disinfection.pdf

--
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Change lycos to yahoo to reply

Thanks for that mate, I dunno, looks like a tricky thing to
get
done. The difficult part is getting the water out of the pipe
before I start, as well as finding a suitable pipe to insert.

Hey clot, hope youre around... would there be any good
indications
on the street that the house is located on a balance point? I
would have thought that it would depend on water demand, so at
some points in the day the water could be 'balancing' outside
one
part of the street, and at other times when the demand becomes
greater on another part of the road, it changes again?

You're right. It does slosh about depending on demand. The best
indicator is the chlorine content; i.e. the lower the
concentration, the older the water and hence indicates the
likely
balance point.

Its just that with our chlorine so low, surely this affects a
fair
bit of our area and not just one or two houses? There are about
20
houses on my side of the road, and another 15 or so on the
other...
we're part of a large housing area with the same water supply
source. I can't imagine that if our chlorine is generally so low,
that other houses have a much better level, and they dont seem to
have the problems we do. I did disinfect the attic tank and hot
tank with a bit of domestos (no worry, I flushed very well
afterwards!) and the amount of algae that came out of
particularly
the hot tap after was very disturbing. I would need to do it
again
thoroughly to see how much more I can purge, but its difficult to
find a good time to do this.

Yes, the low chlorine would affect others in the street. However,
from what you have just said, there appears to be a fungal/
bacterial film growing in your system that will soak up the
chlorine. It shouldn't be algae, by the way. They need sunlight to
grow. I really am puzzled as to why you are so inflicted.

From what you've said, another thorough cleaning/ flushing of the
tanks will help. However, that will not affect the quality of cold
water in the taps, assuming that they are all direct off the
service
pipe.

I had certainly thought that the chlorine could be being soaked
up....
you can smell the chlorine a bit more late at night I have noticed.
Not sure why that is. Do you have any idea what could be used to
'air
flush' our service pipe? A compressor perhaps? It really is a
difficult thing to find time for, and tough to get people to do it.

I'm sorry I don't. I just knew that it was one technique myformer
employer used to clear out mains and service pipes. I've not googled.
I'm off to an Annual Dinner this evening of water folk. I'll try to
remember to ask someone!

Thanks clot, have a good one.

Hi None, I did remember. However, the folk that I happened to be sat
with at the dinner were all wastewater types. I spied the guy I needed
to talk to re air scouring but by the time the formal part of the
evening finished, he escaped!

I'll try to ask some former colleagues by e-mail.