This building has had plumbing leaks that has gotten into the walls. Black Mold was over the walls and the tenants reported it. The owner came in a washed and painted the walls, but the mold was not abated and has returned. I know of one tenant (who is undocumented and afraid to report the owner), whose son is 7 or 8 and has developed asthma, and her newborn (2 months or so) is having respiratory problems. The owner sent tenants a letter stating if they want the mold removed they have to do it themselves. I do not have a copy of the letter. Please help. The health of these tenants is being compromised by the owner.