A tenant has certain rights in regard to potentially hazardous mold in a rental property, though the specific rules and regulations regarding mold vary by city and state, and are subject to change. Federal law currently has no uniform standards or laws regarding mold, though a tenant does have a right to live in a generally ﾓhabitableﾔ environment. A serious mold infestation can possibly cause a rental unit to be deemed uninhabitable, and a landlord may be obligated to clean the property. A tenant living in a mold infested property may have the mold tested by a professional, though the process can sometimes be costly. If the tests confirm that the mold could be toxic or otherwise lead to health problems, a tenant may be able to pursue legal action to have the matter resolved. Some states, such as California, Texas, ans Indiana, have particular laws regarding mold levels in indoor air. In San Francisco, mold is treated as a legal nuisance similar to vermin infestation, and a tenant may sue a landlord under nuisance laws for failure to properly clean a mold infestation. Across the country, millions of dollars in damages have been awarded to tenants who have sued landlords for ignoring serious mold infestations.