webpage
I'm a big believer in water filtration. I notice a huge difference with my whole house filter, it's like night and day. The first time I took a shower I couldn't believe the difference! I researched a ton of different companies when I knew I wanted a filter and I ultimately went with Natural Waters for a number of reasons.
Natural Waters offers a free in-home water analysis before and after installing a whole home water filtration system. They have a three-step filtration process that starts with a carbon block filter which takes out the large contaminants and cancer-causing trihalomethane. The second step is a mixed media tank with activated carbon that takes out over 80 chemicals and toxins left in the water like chloramines and heavy metals and also improves the taste. This step also uses TAC technology to crystallize the minerals that cause hard water so they no longer stick to your pipes. This method is chemical and salt free, and allows the minerals to stay in the water so those drinking the water can still reap the health benefits. Then finally the last step is a UV water filter, which kills bacteria and viruses in the water (these are FDA approved and also used in hospitals).
Most water filtration companies I've found don't include all three steps, plus they included free installation. The other companies I researched required you to find your own plumber that was certified otherwise they wouldn't insure the filter. Plus they were super helpful with the water test that you had mentioned and gave me the test results to keep for free.
Hope this helps!