clean air and water

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  1. #31
    tex
    tex is offline

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    Jul 2004
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    just wanted to report back to all of you who said they boil water because their pipes are old. here's what i've learned. mind you, i was pretty ignorant on these things so i asked dad who's a chemical engineer. and then i went out to the shops to see what was available, read the brochures, talked to sales people.

    from all this what i have gathered is that boiling is pretty much unnecessary, it's the filtering that's important because the old pipes may be rusting, the welding may be losing miniscule particles of metals,, etc. in short, boiling is fine but not enough if you are really concerned about your pipes.

    which is pretty much what docbird said in the first place. thanks doc.

  2. #32
    fly
    fly is offline

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    We do still boil the water but it's more of a legacy/traditional thing to have some hot water handy than boiling some every time some there is a hankering for tea or other. Before I got my filter some of the filtration companies promoting their products did some tests on the tap water vs. boiled water vs. filtered water, and even taking those tests with a grain of salt, its quite clear simply boiling won't reduce particulates in the water.


  3. #33

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    Jan 2003
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    In the Lair of the Village Idiot's Apprenctice
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    Well Well Well

    The Boffins on Pollution Slugging it out on Radio 3 this morning

    http://www.rthk.org.hk/rthk/radio3/b.../20041026.html

    The Govt rep has to be heard to be believed, and even then you might need a ,well , filter to make out what he is,well, saying.


  4. #34

    Join Date
    Feb 2006
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    1

    concerning the drinking water question, i'm using a healthy water system in my home. it's simply connected to the tap and no electricity required. I was shocked to see what's on the surface of the dirt filter, and its other functions satisfies me.


  5. #35

    Join Date
    Nov 2005
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    This seems interesting:

    http://www.ncbi.nlm.nih.gov/entrez/q...&dopt=Abstract

    The lifetime cancer risk and the hazard index of trihalomethanes (THMs) through oral ingestion, dermal absorption, and inhalation exposure from tap water in 19 districts in Hong Kong are estimated. The most dominant THMs are chloroform and bromodichloromethane (BDCM) in Hong Kong tap water.

    The chloroform and BDCM are at or above the negligible risk level of 10(-6) by a factor of 10 or more in most districts. Among the 19 districts, people living in Sai Kung have the highest risk of cancer due to the THM exposure through the multipathways, mainly because of the exposure to BDCM and dibromochloromethane (DBCM). The total cancer risk analysis indicates that each year approximately 10 out of the seven million Hong Kong residents could get cancer from the daily intake of water.

    Anyway, 10 out of 7,000,000 water drinkers is still quite low compared with 1 out of 7 smokers.


  6. #36

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    Oct 2006
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    Kwai Chung
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    Quote Originally Posted by penguinsix
    One of the things that drives me nuts is that the buses have exhaust pipes that aim right at the sidewalks. I mean something as simple as extending these pipes upwards through the roof (as they are doing in the US now) goes a long way to improve the "neck level" air pollution that most people experience every day.
    i totally agree! i was standing on the sidewalk today at a bus stop. my bus was behind this other bus, which was stopped. as i waited for my bus, i sucked up a lungful of that black poison.

    don't get me started in those bus shelters near the MTR stations...

  7. #37

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    May 2004
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    Veggie, HK
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    so called new enviromental friendly bus is mystery to me

    the bus exhaust seems to be more problematic than non-air conditioning bus, not just black smoke, when a bus come stop by a bus stop, you can feel its back side is hot like a big oven.

    i prefer less emission, open windows buses


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