If your home has high concentrations of radon there are ways to reduce it to acceptable levels. Most radon problems can be fixed by a do-it-yourselfer for less than $500. If you want or require the assistance of a professional you may wish to look at the list of certified radon mitigators for your state.
Interestingly enough, one common cause of bloody mucus in nose areas is high blood pressure. While the blood vessels and the nose seem hardly related in any pertinent way, Kaiser Permanente points out that high blood pressure can cause nosebleeds, which can result in bloody mucus discharge. What can cause this is the perfect storm of adjacent occurrences.
A deviated septum is a very common problem. But, just because you have nasal blockage does not mean that you have a deviated septum. Other causes of nasal blockage include swollen sinuses, enlarged inferior turbinates (the heat pumps of your nose), enlarged adenoids, sinus and nose polyps, and many others.