The mere presence of microbes does not necessarily constitute a health hazard. It is well established that excess moisture or water damage in building materials leads to the growth of microorganisms. There is, however, a lack of epidemiologic data to clearly link disease outcomes with the growth or contamination of microorganisms in these water-damaged materials. While it is possible that inhalation of high concentrations of toxigenic organisms may cause disease in susceptible individuals, much less is known about potential toxic effects in human populations at lower airborne concentrations. These uncertainties frequently cause anxiety for building occupants and owners, regardless of exposure levels and biological plausibility.
Exponent uses a multidisciplinary approach in examining microbial indoor air quality issues.
By combining well-established scientific principles with rigorous epidemiologic study designs and statistical analyses, our uniquely qualified team of professionals can investigate the full spectrum of indoor air quality issues. Our expertise extends from determining the association between perceived risk factors and exposure to microorganisms or their secondary metabolites to the development of specifications for removal or treatment of contaminated materials. Exponent's staff has completed numerous unbiased, controlled studies to assess all aspects of water intrusion causation, microbial growth, and health.