One thing occurred to me about chlorinated water. Adding chlorine to water is there to keep the bacteria out.
Now let's say you are a probiotic user, whether you use probiotic pills, or sauerkraut, or kimchi, or kefir, or yogurt, or any of the other natural pre and probiotics you can use to keep your gut healthy. You drink lots of water to stay healthy. Maybe you are treating yourself with healthy food for colitis, or acid reflux disease, or irritable bowel syndrome or something else. Wouldn't the chlorine in city water work against the bacteria you are trying to stabilize in your gut?
People aren't talking about that and I wonder why? Maybe they just don't know that chlorine kills bacteria and that is the same bacteria that keeps your gut healthy. Something to think about.