I have a problem with silt coming through the water from a submersible well under my home's foundation. I have a water softener, and a whole house filtration system. But he filter on the filtration system is clogged with silt after only 10 days use and I have to keep buying new filters. The well was cleaned out last year and the well pump is 10 years old. There is also a slight sulphur odor that has returned even the well was chlorinated twice in the last 4 months. Any help or suggestions would be appreciated.