hi guys. ive been diagnosed with IBS I've also quid smoking which could also cause IBS to flair up. But could tap water cause IBS to flair up/ Upset stomach? reason why I'm asking is earlier on i was fine then i went into the kitchen to get a drink i drink a lot more water now. but when i drank the water from the tap 20 mins later my stomach just turned and i was in a lot of pain now could this be caused by the water? any ideas guys? Bottled water seems to be fine i can drink bottles and bottles of that but the tap water seems to be different.