Healthy Home Environmental Services can tell you. A simple water test can restore your confidence in the safety of you and your family. More importantly, testing may reveal contaminants that you have unknowingly been living with for many years. Healthy Home Environmental Services offers well water testing for drinking water and well water in the Greater Orlando area. Houses with well water should be tested annually for bacteria and chemical contamination. Drinking water drawn from private wells should be tested for the presence of bacteria at least once a year or any time there is a change in taste, odor, color or appearance of the well water. Testing drinking water for all possible pathogens is complex, time-consuming and expensive. It is relatively easy and inexpensive to test for coliform bacteria and other common metals.