My daughter has just moved into a flat at Brighton. She is scientific
She wishes to remove oestrogen, chlorine and a variety of other
alleged or actual contaminents from her drinking water and, it
appears, her shower water
She has cited a UK Water filter
Which seems to me merely to filter (reverse osmosis plus filters)
drinking and cooking water at a slow rate and store it under sink for
I am unconvinced that ordinary tap water is so bad as to need to do
this but could be with the right data
My questions are:
Does anyone know the pressure in Brighton?
How could one get the contaminants or other contents of water over the
internet - surely it is in the public domain?
has anyone experience of doing this for bath (ie whole house water)
which seems most improbable
likewise has anyone done this for cooking and drinking (very likely)
and if so
what do the recommend?
It seems to me to be money for old rope with the cost of filters etc
and that for drinking and cooking there must me a gravity filtration
or ion exchange system that would be cheaper
I may be wrong and in which case if a reverse osmosis system is the
answer - any recommendations?
If Brighton is Southern Water Have a look at:
or search google with
"Water Quality Report" site:www.southernwater.co.uk
Does the house have a water tank in the roof? if so you could always
fit a larger RO filter such as
and use the water tank in the roof as a buffer. You may have to give
up the kitchen to fit the filter in to the house but as a scientific
person (of sorts) she will understand that.
Tap water. De-chlorinating is done by simply leaving the water to
stand in a jug for an hour or so. If you find the water to be hard
use a Brita filter jug.
It is. The effectiveness of these cheap domestic units is also very
variable. Usually, the higher the flow rate the less effective the
filter (for a given size). Quite a few simply don't work even to
their own declared standards (which are sometimes not very good to
begin with if you examine the figures). As there is nothing of worth
for them to filter in tap water no one ever notices and the cost of
periodic analysis is such that no one bothers doing it so their
failures remain undetected.
Best aquire the self discipline to put a big jug of fresh tapwater
covered with a net or piece of kitchen towel in the fridge before
retiring for the night.
Filters are much cheaper in SEARS in the USA. I was going to buy a
load and bring them back last time I went but the sales assistant
asked me which I had, "Odour" or "Sediment", in my water. TBH I had
neither. Then my uncle told me their market was for people (like him)
who have both well water (for drinking) and a septic tank in the
Much to be said for her getting someone with a Makro or Costco pass to
obtain it (H2O) by the caseload for her, plenty cheap enough for
drinking purposes, can be sparkling or not, and should she choose can
come in lunchpack sized bottles to take to work.
Oh, forgot to mention, you get to choose whether you want your water
to be freighted from the Scottish Highlands, Miss Marple-Esque
Harrogate, Pagan Wales, The Cotswolds, Sicily, or 50,000,000 year old
water (Best Before Feb 2010) from the Volcanic region of the Massif
Central in France. Oddly all cost more / less the same price which
doesn't seem to vary with the exchange rate. 8-|
On Mon, 21 Sep 2009 21:27:14 +0100, Derek Geldard wrote:
I'd rather drink tap water, it has less contaminants and lower
bacterial load than bottled water.
The only reason for a "filter" on the mains water in this country
would be if it's very hard or if you have a private supply from a
spring or well. In which case you may well still be better off with
UV treatment to kill the bugs rather than a filter.
Maybe it is worth reminding this "scientific (of sorts)" daughter
that the human animal has a very effective immune system and that the
vast majority of the planets human population does not have a
purified and clean water supply. You don't, *generally*, see the
human population being ill or dying from water bourne disease.
On Mon, 21 Sep 2009 22:40:10 GMT, The Medway Handyman wrote:
"An American junior high school student won first prize at a Science Fair
by attempting to show how conditioned we have become to alarmists
practicing junk science and spreading fear of everything in our
environment. In his project he urged people to sign a petition demanding
strict control or total elimination of the chemical "dihydrogen monoxide."
And for plenty of good reasons, since:
1. it can cause excessive sweating and vomiting
2. it is a major component in acid rain
3. it can cause severe burns in its gaseous state
4. accidental inhalation can kill you
5. it contributes to erosion
6. it decreases effectiveness of automobile brakes
7. it has been found in tumors of terminal cancer patients
He asked 50 people if they supported a ban of the chemical.
* Forty-three (43) said yes,
* six (6) were undecided,
* and only one (1) knew that the chemical was water."
The head of a pin will hold more angels if
Fitting a water filter (of any sort) on the incoming feed would only
make the problem of any decomposing wildlife in the attic tank worse
as it will remove some of the chlorine from the water before it gets
to the tank.
Perhaps a webcam looking into the attic tank so it can be inspected
for vermin before each shower would be cheaper? (or of course
simpler, cheaper and more reliable - fit a lid on the tank).
Incidentally I notice the device quoted in the original post has a
maximum capacity of only 50 litres a day and must be fed by water
which is already drinkable. This does rather bring into question its
ability to filter anything of significance.
So fit a lid that complies with the regulations.
Once you have a proper lid there is enough chlorine in the water filling the
tank to keep it clean if she washes each day.
the other solution is a combi or some other mains hot water system.
You do not want to remove chlorine from wash water unless there is a
specific medical reason.
On Tue, 22 Sep 2009 09:33:22 +0100, dennis@home wrote:
No proper lids on the tanks here when we moved in. All manner of
stuff in the bottoms from brick dust and rocks to dead centipeeds
beetles and a mouse. Didn't do us any harm and all the water we use
goes through those tanks as they were installed before mains water
arrived and the incoming supply was a bit erratic.
There are two reasons to filter water generally, to remove harmful
content, and to improve its aesthetics. The former almost never applies
in the uk unless you are on a private supply etc. The latter comes down
to a question of taste (literally in some cases). Particulates like
grit, rust, or even water worms are generally not harmful, although they
certainly make it less appealing. Chlorine will boil off if water is
left in a jug etc - although a filter will take it out on demand.
Filters may also remove unwanted smells, and colourations.
So for the purposes of drinking, much depends on what she perceives is
wrong with her supply. It might be there are genuine aesthetic problems
and a filter will make them go away, or alternatively there is just fear
of "unknown stuff", which I suppose a filter may also make go away - but
for different reasons!
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