I have a major nasty smell that recently started . I think it may be sulfur, but my question is how to get rid of it? It isn't coming through the plumbed water lines, instead I think it's coming from the submersible pump maybe?Please tell me how to get rid of this..

Sounds like " Sulfur Water" to me. What's your location? I live in Florida where we have this problem on some of our wells. Regards, Tom

Is your well water chlorinated?