Correlation between ERMI Values and Other Moisture and Mold Assessments of Homes in the American Healthy Homes Survey
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The main objective of this study was to evaluate the correlation between the Environmental Relative Moldiness Index (ERMI) values in the Department of Housing and Urban Development American Healthy Homes Survey (AHHS) homes and an alternative analysis frequently used in mold investigations, i.e., the inspector’s “walk-through” assessment of visual or olfactory evidence of mold combined with occupant’s answers to a questionnaire about mold odors and moisture. Homes in the highest ERMI quartile were in agreement with visual inspection and/or occupant assessment 48% of the time but failed to detect the mold in 52% of the fourth quartile homes. In about 7% of lowest ERMI quartile homes, the inspection and occupant assessments overestimated the mold problem. The ERMI analysis of dust from homes may be useful in finding hidden mold problems. An additional objective was to compare the ERMI values in inner city east-Baltimore homes, where childhood asthma is common, to the AHHS randomly selected homes.
KeywordsMold Moisture MSQPCR ERMI Inner city Questionnaire
- US EPA
United States Environmental Protection Agency
Mold-specific quantitative polymerase chain reaction
Environmental relative moldiness index
Department of Housing and Urban Development
American Healthy Homes Survey
This research was partially supported by funding from the U.S. EPA Asthma Initiative.
The U.S. EPA through its Office of Research and Development, funded and collaborated in the research described here. It has been subjected to the Agency’s peer review and has been approved as an EPA publication. Mention of trade names or commercial products, including those that embody EPA patented technology, does not constitute endorsement or recommendation by the EPA for use.
- 1.Institute of Medicine, National Academies of Science. Damp Indoor Spaces and Health. Washington, DC: National Academies Press; 2004.Google Scholar
- 3.Kercsmar CM, Dearborn DG, Schluchter MD, et al. Reduction in asthma morbidity in children as a result of home remediation aimed at moisture sources. Environ Health Perspec. 2006; 114: 1574-1580.Google Scholar
- 5.ASTM International, “Practice for Evaluating Residential Indoor Air Quality Concerns” D 7297-06. ASTM International, West Conshohocken, PA. 2007; 11.01: 1–28.Google Scholar
- 6.ASTM International, “Readily Observable Mold and Conducive to Mold in Commercial Buildings: Baseline Survey Process” E-2418. ASTM International, West Conshohocken, PA. 2006; 11.05: 1046–1060.Google Scholar
- 7.U.S. Environmental Protection Agency, Office of Air and Radiation, Indoor Environments Division (6609 J). “A Brief Guide to Mold, Moisture, and Your Home.” EPA 402-K-02-003, US EPA, Washington, D.C. 2002Google Scholar
- 14.Vesper S, McKinstry C, Haugland R, et al. Higher environmental relative moldiness index (ERMIsm) values measured in Detroit homes of severely asthmatic children. Sci Total Environ. 2008; 94: 192-196.Google Scholar
- 18.Helsel DR. Nondetects and Data Analysis, Statistics for Censored Environmental Data. Hoboken: Wiley; 2005.Google Scholar