The objective of this study is to analyze characteristics of household water and to predict
the trend of water use for the future based on the statistical analysis. Domestic water
consumption is estimated by metered water use components of sampled 146 households in
Korea from 2002 to 2006. The water use of each purpose represents that 25% of total for
toilet, 20% for laundry, 19% for kitchen, 16% for bathing, 10% for washbowl, and 9% for
uncategorized miscellaneous. Comparing the amount of water of each housing type, 141
Liter per Capital per Day (Lpcd) was estimated in single family house, 155 Lpcd for multiunit,
and 159 Lpcd for apartment respectively. The results are compared with other countries’
water use by each component of the validity estimated waster use. It shows that total water
use per person a day and component ratio with U.K., U.S., the water consumption patterns are
similar to U.S. Also, total water use in U.K. was less than that of both Korea and U.S. The
effect of life-style and residential types on water use has had a marked impact on household
occupancy levels with the rate of economic development, particularly in the more urbanized
areas.