Immune-compromised?

Are we still considered to be immune - compromised after the colon is gone? I just found out form the landlord that a slightly too-high level of legionella were found in the house water where I live. He says the level is not enough to jeopardize anyone's health. I think he's been full of it about a number of issues here. Wiki says that legionella probably won't effect normal healthy adults, but that the elderly and immune-compromised are at risk.

You're right,it is from the meds. My GI had told me that UC is because of a defect in the immune sysstem, but that is not immune-compromised.