^^^this.Comprehensive. Meaning a full well test. The information you have is interesting but is the equivalent of an auto mechanic listening to your car over the phone and saying "its a great car!". A real test will give us an indication of what is going on. It will also look for many contaminants that can be harmful or difficult to remove etc. A real test should be done at minimum every few years or when you notice a change in the well. Here is a link to a real testing company. When you own a well, you have the responsibility of testing the water.