My question involves a condominium located in the State of: Illinois. We own a first floor unit in a building of 16. Since purchasing in 2001, we have continually had issues of sewage backing up into our unit's kitchen sink and flooding the kitchen. It typically affects all 4 first floor units - our unit being most frequently/severely affected. Numerous plumbers have stated it is a building issue having to do with improper plumbing during construction - the pipes in question are actually under someone else's unit all together. While the Association always pays to have it temporarily corrected, we have had sewage flooding in our kitchen too many times to count. It has ruined our hardwoods, there is mold growing, etc. How do we get the Association to pay for the damage to our individual unit?