If mold is a problem in your home, clean up the mold and get rid of the excess water or moisture. Fix leaky plumbing or other sources of water. Wash mold off hard surfaces with detergent and water, and dry completely. Absorbent materials (such as ceiling tiles & carpet) that become moldy may have to be replaced. Learn more
Mold growing in a Petri dish
Molds can be found almost anywhere; they can grow on virtually any organic substance, as long as moisture and oxygen are present. There are molds that can grow on wood, paper, carpet, foods, and insulation. When excessive moisture accumulates in buildings or on building materials, mold growth will often occur, particularly if the moisture problem remains undiscovered or unaddressed. It is impossible to eliminate all mold and mold spores in the indoor environment. However, mold growth can be controlled indoors by controlling moisture indoors. Read an Introduction to Mold. | Take our Mold Course
"A Brief Guide to Mold, Moisture, and Your Home"
HTML | PDF (20 pp., 1.4 M, about PDF)
EPA 402-K-02-003, Reprinted September 2010
Una Breve Guía para el Moho, la Humedad y su Hogar
- está disponible en el formato PDF (PDF, 20 pp., 796 K)
- Documento de la agencia EPA número 402-K-03-008
"Mold Remediation in Schools and Commercial Buildings"
HTML | PDF (56 pp., 1.6 M)
EPA 402-K-01-001, Reprinted September 2008
Things You Should Know About Mold
- Potential health effects and symptoms associated with mold exposures include allergic reactions, asthma, and other respiratory complaints.
- There is no practical way to eliminate all mold and mold spores in the indoor environment; the way to control indoor mold growth is to control moisture.
- If mold is a problem in your home or school, you must clean up the mold and eliminate sources of moisture.
- Fix the source of the water problem or leak to prevent mold growth.
- Reduce indoor humidity (to 30-60%) to decrease mold growth by: venting bathrooms, dryers, and other moisture-generating sources to the outside; using air conditioners and de-humidifiers; increasing ventilation; and using exhaust fans whenever cooking, dishwashing, and cleaning.
- Clean and dry any damp or wet building materials and furnishings within 24-48 hours to prevent mold growth.
- Clean mold off hard surfaces with water and detergent, and dry completely. Absorbent materials such as ceiling tiles, that are moldy, may need to be replaced.
- Prevent condensation: Reduce the potential for condensation on cold surfaces (i.e., windows, piping, exterior walls, roof, or floors) by adding insulation.
Read about more things you need to know about mold
The "Guidance for Clinicians on the Recognition and Management of Health Effects Related to Mold Exposure and Moisture Indoors" was designed to help the healthcare provider address patients with illnesses related to mold in the indoor environment by providing background understanding of how mold may be affecting patients. The guidance was published in 2004, with support from a grant by the U.S. EPA, by the Center for Indoor Environments and Health, or CIEH at the University of Connecticut Health Center.