White Oak are rarely planted anymore. The only places that you find these trees are in forests that are covered with white oak. White oak are very well known for the disease that they get. Probably more known then the tree itself is oak wilt.
Oak wilt is a fungus disease that attacks the white oak and has caused mass devastation to the white oak population. If you have a white oak in your yard it will most likely get oak wilt. Not being the bearer of bad news but this disease has spread itself out so much that it will most likely affect every untreated white oak.
Oak wilt is treatable at just about any stage of the disease. Even if nearly all of the leaves have shed from the tree the proper treatment will completely save this tree.
Here are some signs that your white oak has oak wilt:
Leaves are starting to brown
Sections are dying out (usually right or left half)