Please allow 1 hour to complete all tests during your free in-home water testing. An adult should be present at all times during the testing. Your water technician will be testing for hard water, correct PH Levels, Calcium, Magnesium, Aluminum, Arsenic, Barium, Beryllium, Cadmium, Copper, Chromium, Fertilizers, Pesticides, Flouride, Lead, Nickel, Nitrates and Bacteria, Selenium, Silver and Thallium. Your water technician will physically break down a sample of your water so you can see what is in it your home's water supply.