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iknow
Premium
join:2012-03-25
reply to Jack_in_VA

Re: Deadly Amoebas Found in Tankless Water Heater

said by Jack_in_VA:

said by patcat88:

If you use a tempering valve, you contaminated your hot water with healthy amoeba from cold water.

I think that little "Inconvenient Fact" negates most of the arguments for having the temperature so high on the water heater.

You don't even need a tempering valve for this to happen. Just adding cold water to temper the temperature low enough to keep the water from scalding will contaminate the 140 degree water.

no, the amount of harmful bacteria etc. is much lower in cold water, so much lower that the governing body of the water agency you get the water from deems it safe to use!. it's the vastly increased amounts of bacteria etc. in WARM water that makes it unsafe, they grow to dangerous levels in WARM water!!. have the condensate from your A.C. tested sometime!!.


Jack_in_VA
Premium
join:2007-11-26
North, VA
kudos:1
Reviews:
·Millenicom
said by iknow:

said by Jack_in_VA:

said by patcat88:

If you use a tempering valve, you contaminated your hot water with healthy amoeba from cold water.

I think that little "Inconvenient Fact" negates most of the arguments for having the temperature so high on the water heater.

You don't even need a tempering valve for this to happen. Just adding cold water to temper the temperature low enough to keep the water from scalding will contaminate the 140 degree water.

no, the amount of harmful bacteria etc. is much lower in cold water, so much lower that the governing body of the water agency you get the water from deems it safe to use!. it's the vastly increased amounts of bacteria etc. in WARM water that makes it unsafe, they grow to dangerous levels in WARM water!!. have the condensate from your A.C. tested sometime!!.

iknow again you do realize you can and are entirely free to set your temperature to any value you want and are comfortable with. Nobody here I don't think will try to force you to do differently. I'm entirely satisfied with the 120 mine is set for and I'm still alive.


Lurch77
Premium
join:2001-11-22
Oconto, WI
kudos:4
reply to iknow
said by iknow:

no, the amount of harmful bacteria etc. is much lower in cold water, so much lower that the governing body of the water agency you get the water from deems it safe to use!. it's the vastly increased amounts of bacteria etc. in WARM water that makes it unsafe, they grow to dangerous levels in WARM water!!. have the condensate from your A.C. tested sometime!!.

They were found in the faucets of one of the dead victims, with no mention of a water heater in that case. Seems "WARM water" is not the only place they live and thrive.

Telling someone to test the AC condensate is stupid and has no comparison to the potable water sources we are discussing here. AC systems are full of bacteria and other contaminants due to the environment it is in. Just like we would not compare our drinking water to swamp water.


marigolds
Gainfully employed, finally
Premium,MVM
join:2002-05-13
Saint Louis, MO
kudos:2
reply to iknow
said by iknow:

said by Jack_in_VA:

said by patcat88:

If you use a tempering valve, you contaminated your hot water with healthy amoeba from cold water.

I think that little "Inconvenient Fact" negates most of the arguments for having the temperature so high on the water heater.

You don't even need a tempering valve for this to happen. Just adding cold water to temper the temperature low enough to keep the water from scalding will contaminate the 140 degree water.

no, the amount of harmful bacteria etc. is much lower in cold water, so much lower that the governing body of the water agency you get the water from deems it safe to use!. it's the vastly increased amounts of bacteria etc. in WARM water that makes it unsafe, they grow to dangerous levels in WARM water!!. have the condensate from your A.C. tested sometime!!.

So, that's why you should use a tankless then? Since the water is warmed for only a few seconds as compared to minutes to hours in a tank heater?

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AVonGauss
Premium
join:2007-11-01
Boynton Beach, FL
reply to iknow
said by iknow:

no, the amount of harmful bacteria etc. is much lower in cold water, so much lower that the governing body of the water agency you get the water from deems it safe to use!. it's the vastly increased amounts of bacteria etc. in WARM water that makes it unsafe, they grow to dangerous levels in WARM water!!. have the condensate from your A.C. tested sometime!!.

Its not that there is "more" contamination in warmer water, it is the combination of the water being stagnant (i.e. hot water tank) and being in a warm environment that promotes the growth. If you take water from the same source and put it in two sealed containers, one room temperature and one warm, the warmer will grow faster but the room temperature will also grow, albeit slower.

Conversely, if you take room temperature water and warm water (120 F) and circulate both in individual closed loop environments you'll probably see negligent additional growth in the warm water loop vs the room temperature loop - the water is not stagnant, you've broken the cycle (think breaking fire triangle).

Circling back to the actual problem and original post, its the combination of the bacteria being present (which it almost always is) and using that water in a Neti pot. It doesn't matter if your water tank is set to 160 or 120, when you take that water and expose it to the thin membranes of your sinuses there is mounting evidence that you expose yourself (unnecessarily) to a greater risk of infection. What's not known is how many times someone has used a Neti pot, got infected and not had a severe enough reaction to have the incident reported - or for that matter, how many times a Neti pot is used and no infection occurs.


SparkChaser
Premium
join:2000-06-06
Downingtown, PA
kudos:4
Reviews:
·Verizon FiOS
said by AVonGauss:

Circling back to the actual problem and original post, its the combination of the bacteria being present (which it almost always is) and using that water in a Neti pot. It doesn't matter if your water tank is set to 160 or 120, when you take that water and expose it to the thin membranes of your sinuses there is mounting evidence that you expose yourself (unnecessarily) to a greater risk of infection. What's not known is how many times someone has used a Neti pot, got infected and not had a severe enough reaction to have the incident reported - or for that matter, how many times a Neti pot is used and no infection occurs.

Yes, as I pointed out early in the thread, Boil the water
before using in a Neti Pot --
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