Salt problems?

I don't have a problem with salts yet but since in only have hard water out here when I water I'm worried about salt build up, if I do get salt build up how to I get rid of it? Is there any precaution I can take to assure that I won't get salt problems? Thanks I just don't want my plants to get hurt

If you have good runoff when watering then you won't have to worry about that. About 20% will do just fine