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Chlorine in water

nimzov

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Apr 12, 2004
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954
Hi.

How long (approx.) does it take for a glass of water to loose its chlorine by evaporation ?

nimzo
 
According to this, it seems a lot of it will evaporate within a few minutes.

If you want to be extra certain, you could boil your water, but that's a waste of energy unless you really want to be sure.
 
Dilb said:
According to this, it seems a lot of it will evaporate within a few minutes.

If you want to be extra certain, you could boil your water, but that's a waste of energy unless you really want to be sure.
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My tap water has so much chlorine in it that it smells like a swimming pool. That is not my description, that is how everyone who doesn't live near me (on the same water system) describes it. I have to filter my shower water, because i'm very sensitive to the chlorine compounds. There are a few other undesirables in my water as well, though in minor concentrations; but I filter anyway since I can get good filters fairly inexpensively (certainly less than a couple hundred dollars).
 
Yeah, it can be kind of gross to know that the more cities are upstream, then the more chlorine is in the water (or so I was told by a teacher once). It is nice to know you can filter it if you feel you need to.

Loved the posted link's article:

The yellow sludge wasn't coming from invisible chemicals that had been jolted out of solution. It was coming from one of the electrodes. Electrolysis is a commonly performed chemical procedure in which two electrodes are immersed in water and a current is passed between them. This causes water to break down into oxygen and hydrogen. But if one of the electrodes is made of iron, it reacts with water to form a precipitate of yellow iron hydroxide -- or rust.

So, all I was doing was drinking a little rust, just a form of iron supplement, I explained to the incredulous salesman. I decided to punctuate my little performance by taking his glass of filtered water, adding a few grains of salt, and subjecting it to a current. Within seconds the familiar yellow scum formed
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And the writer listed other reasons why he did buy the filter in the end.
 
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Chlorine leaves water pretty quickly, I remove chlorine from my water before adding it to my fish tanks by letting it sit overnight.
If your water company uses chloramine then that's another matter.
 
luchog said:
My tap water has so much chlorine in it that it smells like a swimming pool.
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According to my chlorine test kit that I use with my hot tub, the tap water I fill it with has a chlorine concentration of 1 ppm. And that's the same level that I'm supposed to shoot for when I add chemicals to it, although most hot tubs including mine use bromine instead.

Are pools also kept at 1 ppm? If so, that means that my tap water has the same chlorine level as swimming pool water, although my tap water tastes very good.
 
CurtC said:
According to my chlorine test kit that I use with my hot tub, the tap water I fill it with has a chlorine concentration of 1 ppm. And that's the same level that I'm supposed to shoot for when I add chemicals to it, although most hot tubs including mine use bromine instead.

Are pools also kept at 1 ppm? If so, that means that my tap water has the same chlorine level as swimming pool water, although my tap water tastes very good.
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Swimming pool treatments are recommended to keep chlorine levels between 1ppm and 3ppm. Although the EPA allows up to 4ppm for tap water, typical city water averages between .5 and .8 ppm.
 
I took a 50 hour course in swimming pool care at the local Junior college about 15 years ago. Chlorine and most of its compounds have neither odor nor taste at 4 parts per million in water. Atomic oxygen is released which acts as a disinfectent. When the chlorine is less than about 1/2 part per million some bad smelling chlorine compounds are produced by reacting with organic compounds. Available chlorine should be kept between 1 and 3 parts per million, but 4 is much better than 1/2.
I later learned that dioxin can be produced in parts per billion from almost any chlorine compound. Unfortunately dioxin is toxic and accumlative at one part per billion. A chemical engineer who is still suffering from dioxin posioning long after he got a full disability gave me this information. Some paper mills are changing to hydrogen peroxide H2O2 instead chlorine to avoid this toxicity.
Not surprising, chlorine manufacturers are claiming that dioxin and similar compounds are not a significant hazard in most applications. George is also of the opinion that burning plastic and other chlorine compounds are also a serious threat to our health. Neil
 
LUCHOG, are you hooked to some back-water municipal supply? With some Joe Dirt in charge of the water filtration, who figures that if a little is good, a lot is better? Many large systems have gone to chloramine, since chlorine was linked to stomache cancer a few years ago. You ought to look into the clorine levvels at the tap...
 
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