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The Canadian House Dust Study was designed to obtain nationally representative urban house dust metal concentrations (μgg⁻¹) and metal loadings (μgm⁻²) for arsenic (As), cadmium (Cd), chromium (Cr), copper (Cu), nickel (Ni), lead (Pb), and zinc (Zn). Consistent sampling of active dust of known age and provenance (area sampled) also permitted the calculation of indoor loading rates (mgm⁻²day⁻¹ for dust and μgm⁻²day⁻¹ for metals) for the winter season (from 2007 to 2010) when houses are most tightly sealed. Geomean/median indoor dust loading rates in homes located more than 2km away from industry of any kind (9.6/9.1mgm⁻²day⁻¹; n=580) were significantly lower (p<.001) than geomean (median) dust loading rates in homes located within 2km of industry (13.5/13.4mgm⁻²day⁻¹; n=421). Proximity to industry was characterized by higher indoor metal loading rates (p<.003), but no difference in dust …