We are in the state of Wisconsin. We have lived in our current apartment for 6 years 3 months. When we initially sign our lease agreement it was noted that we pay utilities with the exception of water/sewer due to the fact that there is a business under us and we are on the same meter. The initital lease agreement was signed with an agent of the landlord that is no longer with him. He is now trying to charge us for water/sewar usage, but better yet he is trying to charge us for the unit next to us that has the same set up, apartment on second floor business on first. This is a 100+ year old building that has several storefronts with apartment(s) above. Our 2 units are the only 2 in the building that share meters with the downstairs business. The business happens to be a free medical and dental clinic. He can not provide us with our usage at all, is this legal?