Have you read this article about lead contamination in MA? Lead is one of them in the water. You will be very surprised to see how our tap water is contaminated. After trying out many water filtering system, I finally settled down to this model -> Aqua True is my choice. Very easy to assemble the counter top model. This water filter is one of the best to filter all heavy metals and fluoride. The best part is you can change the filter once a year. I use at home and bring to my clinic. It does taste great. This was one of the best so far after used easily ten different water filtering systems.
Here’s the article about Fluoride