Use Water Filters!
No offense intended, but if you don't understand that you should be filtering your water - in nearly every circumstance - then you aren't paying attention.
There are several hundred contaminants shown to be in our water supplies. Any time someone looks, they find they are there! But hundreds are not measured or controlled by municipalities. Many of these are chemicals. No one even knows how they might combine or how they can affect the human body.
Chlorine, and in some places ammonia, which changes the chlorine to chloramine, are added. These serve a disinfecting purpose. They do that because they can kill living things. That's good. But there is no reason why you would want to drink them, absorb them through your skin, or breath them in.
Fluoride is in the majority of municipal water supplies. Our view is that if you want fluoride - go get it. There is no justification for putting medicine in everyone's water. We talk to people all the time who can't be drinking it. (The primary risk of fluoride is ingestion.) The good news is we can filter it out.
Visit the relevant pages to learn more.
Filter your water!
Save Water. Filter Water. Celebrate Water.