[Vision2020] Pool Water Quality

[Joe Campbell]

But as long as folks know it's their choice, right?

Sent from my iPhone

On Jul 22, 2009, at 6:58 PM, Wayne Price <bear at moscow.com> wrote:

>
> A much more serious problem than second hand smoke and the council  
> thinks it's funny!
>
>
> Pollutants in swimming pools
>
> The water in public swimming pools containsmicroorganismsand  
> unwanted substances, which derive from the skin and excretion  
> products of swimmers. Swimmers cause many pollutants to enter the  
> water, such as bacteria from saliva, excretion products, pollution  
> from swimwear, skin tissue, sebum, sweat, nose and throat saliva,  
> hairs, cosmetics andammonia(NH3). Vouching for clean swimming pool  
> water through constant refreshment is often too expensive.  
> Furthermore, this does not solve the problem of pollutants that  
> remain on swimming pool walls. The water is recicled, causing  
> pollutant and pathogen concentrations to increase. Microorganisms  
> will multiply and this causes the risks of contagion to increase.
>
> Dissolved pollutants
>
> Swimming pool water contains dissolved pollutants, such as urine and  
> sweat and other excretion products of swimmers. Sweat and urine  
> largely consist of water, ammonia and ureum. These substances also  
> contain kreatine, kreatinine and amino acids. The components of  
> sweat and urine are not harmful for human health. However, when  
> these products react withdisinfectantsin the water, such aschlorine,  
> unwanted reaction products can be formed which consist mainly  
> ofchloramines.
> The water can contain dissolved pollutants that derive from  
> disinfectants and cleansing agents that are used to clean swimming  
> pools. Dissolved pollutants are largely removed byoxidation. This  
> means that pollutants are decomposed by chemicals. Substances that  
> are not or partly decomposed during the oxidation process and  
> oxidation products are removed from the circulation system by  
> gradual refreshment of swimming pool water.
>
> Health effects of swimming pool pollutants
>
> Swimmers are susceptive to pathogenic microorganisms in swimming  
> pool water. As a result of cooling and water uptake, the resistance  
> of the mucous membranes of swimmers can weaken, causing them to  
> become more susceptive to pathogens in swimming pool water and air,  
> and even to pathogens that are present in their own bodies.  
> Microorganisms that enter the water through excretion by swimmers  
> can cause a large variety of conditions. Most pathogenic  
> microorganisms cause diarrhoea or skin rashes. Certain  
> microorganisms can cause serious symptoms, such as paralysis, brain  
> inflammation, heart inflammation, jaundice, fevers, vomiting,  
> diarrhoea and respirational or eye infections.
> Pathogenic mciroorganisms that can be found in swimming pool water  
> are bacteria, viruses and parasitic protozoa. Young children,  
> elderly people and people with damaged immune systems are more  
> susceptive to infections caused by these species and will fall ill  
> more easily. People that have an untreated form of cancer may also  
> suffer from lower resistance to waterborne diseases. Not every  
> person that is infected will fall ill, but hen or she can still  
> cause contagion of other people.
> In developing countries, the number of people with damaged immune  
> systems is increasing, as a result of an increase in the number of  
> AIDS patients in the last 20 years.
> Read more:http://www.lenntech.com/water-disinfection/swimming-pool- 
> pollution.htm#ixzz0M224zJYa
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