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Originally Posted by RCFA
Very True. I did not mean to say that you will DEFINITLY get cancer from not filtering your drinking water. I only wanted to convey that I believe that dinking tap water is perfectly safe and the only thing that I protect against is chlorination by-products. The levels of which are 99% of the time way below acceptable levels and in some cases not even detectable. But as we are not apprised of the amounts of chlorine being introduced into our water on a daily basis, periods with elevated levels of organics in the water supply require higher concentrations of Chlorine to be added to achieve acceptable levels of disinfection. This CAN cause the THM levels in our water supply to increase. It is a very complex issue and there is a wealth of good and even more bad information out there on drinking water safety. Here's a link if you want to learn everything you could ever want to know.  Take things for what they are worth and do your own research from reputable sources before you believe something some anonymous person tells you on some website! 
http://www.hc-sc.gc.ca/ewh-semt/pubs.../index-eng.php |
Fair enough. Just wanted to point out that it is a complicated thing. People tend to react to stuff without really knowing the bigger picture. Kind of like the debate we had about mercury in vaccines etc. the best idea is to ask somebody with expertise in toxicoloy. Hey, do we know one of those
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Originally Posted by FitoPharmer
I was just thinking that if your tap water is say 200 PPM, then chances are at least some of that 200 PPM is something you would rather not have going into your body and your body is going to have to work harder to remove it. I was thinking higher TDS is just hindering your waste filters. I doubt it would have any significant effect, but hey who knows. Over a lifetime it could have some effect.
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It is, unfortunately, more complicated then that. TDS meters are really conductivity meters that give a surrogate measurement of TDS, not actual "real" TDS. The TDS meters are measuring the amount of dissolved ions which probably has a good correlation with real TDS. But TDS meters will not measure non charged contaminants in the water such as many organic compounds, pesticides etc. The levels of toxic materials you would be worried about in drinking water most likely have no direct correlation to TDS as read by our TDS meters which is more a product of the source of water and how hard the water is. You would probably have to go to your local water quality reports for more detailed information as was pointed out by another member.