Causes of Sinkholes:
Rainfall percolating, or seeping, through the soil absorbs carbon dioxide and reacts with decaying vegetation, creating a slightly acidic water. That water moves through spaces and cracks underground, slowly dissolving limestone and creating a network of cavities and voids. As the limestone dissolves, pores and cracks are enlarged and carry even more acidic water. Sinkholes are formed when the land surface above collapses or sinks into the cavities or when surface material is carried downward into the voids. Drought, along with resulting high groundwater withdrawals, can make conditions favorable for sinkholes to form. Also, heavy rains after droughts often cause enough pressure on the ground to create sinkholes. Sinkholes can also form due to several manmade actions. These actions include drilling new wells, creating artificial ponds, over withdrawal of groundwater sources, and diverting surface water from a large section of other surface water.
For the area that I live in, I am not in any danger of a sinkhole forming. The bedrock under us is not very soluble to let water in and there is not much withdrawal from our well. We also have no other conditions that may lead to sinkholes.