Water ....

AACaHa13

So having to drink tons of water these days got me thinking.... I drink most of mine at home which is from a well and filtered through my refrigerator but sometimes I do go out and take bottled. I've been reading through this pregnancy book that talks about how there are so many added chemicals to water bottles. The only thing I was concerned about before is the type of plastic because of bpa. Now I am a little concerned about the filtering of it. So my question is, do any of you know what kind is safer versus others? And what do you know about all this? Thanks!