General Ionics seemed to be the most knowledgeable and concerned.

Moved into a new house that is on well water.  Didn’t know the area had horrible well water.  Called several companies to test the water. General Ionics seemed to be the most knowledgeable and concerned. They had to special order a system for our water because it was so corrosive. Once the system came in, it took less than 4 hours to install the whole house filtration system and two reverse osmosis systems for drinking water. They were able to get remove all solids and hardness from the water.  Whenever I call with questions they get back to you immediately and they are very attentive to your concerns. They have been amazing to work with.  I would definitely recommend them to others in the area.