National Human Activity Pattern Survey (NHAPS)


NHAPS is a representative US human activity pattern survey of potential exposure of Americans to household air and water pollutants (n = 9,386). The complete data are available, including codebooks and questionnaires. A journal article has been published describing the survey and some results


The NHAPS data are available from several sources.
The EPA makes the NHAPS data available through their CHAD application,
University of Maryland makes the NHAPS data available in ASCII format, as well as supplying an online codebook.
Dr. Klepeis has created an R Package that conveniently contains the NHAPS data, along with questionnaires and codebooks.

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General Public License (GPL).

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