[Greenbuilding] Legionnaire's in water wall features
john bone
johnbone at gateshead.plus.com
Thu Jan 12 10:15:05 CST 2012
Ah, that is because you bodies immune system is not "at a low point" of
efficiency, due to age or other reasons.
It is called Legionnaires as it was a bunch of oldish "American
legionnaires", who sadly caught it from a poorly maintained hotel air-con
system.
-----Original Message-----
From: greenbuilding-bounces at lists.bioenergylists.org
[mailto:greenbuilding-bounces at lists.bioenergylists.org] On Behalf Of RT
Sent: 12 January 2012 16:10
To: GBioEL
Subject: Re: [Greenbuilding] Legionnaire's in water wall features
On Thu, 12 Jan 2012 05:48:47 -0500, John Daglish <johndaglish at free.fr>
wrote:
> just to repeat ultrafiltration or ultrasound/UV can reduce the risk
> considerably... ultrafiltration at < 5 microns
> is smaller than the legionella bugs
Oy! Qu'est-ce qui se passe, mon ami John?
Perhaps this helps to explain why I`m still alive and feel the complacency
that I do WRT legionella exposure (as I speculated the last time this
subject surfaced a few months ago
http://lists.bioenergylists.org/pipermail/greenbuilding_lists.bioenergylists
.org/2011-August/002200.html
`Perhaps long-term, daily exposure to low doses of Legionella in the
course
of our daily washing activities has helped a large portion of that
25% of
the population who apparently have contaminated HWHs, to develop a
degree
of immunity to that bacteria ?` )
I have an inexpensive whole house in-line filter on the supply line after
the pressure tank, the intention being to filter out the sediment and
particulates in our very hard water that is drawn from a well drilled
through 18 metres of a pocket of Nepean-March Formation sandstone which
sits in a depression of the granite of the Canadian Shield.
The filter supposedly is effective down to 5 microns. On second thought
though, that filter being on the inlet side of the DHWH wouldn`t do
anything WRT removing legionella bred in the DHWH and fed into the HW
supply lines.
Nor does it help to explain why the sun-warmed rainwater in the
rainbarrels from which I draw water to shower every morning after bike
rides, hasn`t killed me. It would seem that the well-below 60 degC
conditions inside a sun-warmed rain barrel (with no filtration of roof
runoff ) would create ideal conditions for harbouring legionella (not to
mention West Nile virus-transmitting mosquitoes) etc.
And yet, I`m still here, alive and well. Most puzzling. Eh?
--
=== * ===
Rob Tom
Kanata, Ontario, Canada
< A r c h i L o g i c at Y a h o o dot c a >
(manually winnow the chaff from my edress if you hit "reply")
_______________________________________________
Greenbuilding mailing list
to Send a Message to the list, use the email address
Greenbuilding at bioenergylists.org
to UNSUBSCRIBE or Change your List Settings use the web page
http://lists.bioenergylists.org/mailman/listinfo/greenbuilding_lists.bioener
gylists.org
More information about the Greenbuilding
mailing list