I also use the LifeStraw Pitcher but you don't boil your water before putting it in pitcher do you? From my understanding I can use tap water and the LifeStraw will filter it. I had once read where Fiju and Smart Water were safe to drink but then recently someone posted they were not. The spring water sounds like a good alternative. Let me know if you have any more tips because it is so helpful since I just started the Big 3.