Do you know where the injection wells are in your state? What they are used for? How deep they go? etc.
I suspect this would be an important consideration if I had a well...
Motorola messed up a whole underground aquifer my area... all the people who own wells now have water with MTBE's. At first they issued a map that showed a relatively small contaminated area... now it is known to be nearly the whole valley and metroplex contaminated...
This from storing the waste in barrels (that rusted and leaked with age) above ground that seeped down into the water tables... so land fills and industrial enterprises may be a good to check out as well. Do not trust that they are telling you, or anyone else the truth either. If there was justice in this world, Motorola and the like would be out of business...