Do people actually even bother to test their water to see what the cholrine levels are. Could you use a pool test to guage teh amount of chlorine in one's tap water. I've tried this and there's a neglible, hardly registerable amount. I'm wondering if a filter is really needed. What would be an accepted level in tap water?
Well one thing I know for sure that the water in Melbourne is chlorinated to keep it disinfected. The water in my area also has a very clearly discernible smell and taste of chlorine.
One of the problems is that even if this level of chlorine is very low, it's that your exposure to tap water is chronic unlike in a swimming pool where although the chlorine is much higher the exposure transitory and acute.
The other problem is that in the shower the chlorine is heated and vaporised. This makes it more deadly to the lungs and skin (I can't be bothered tracking down the study that demonstrated this, but it's out there somewhere, perhaps you can hunt it down.)