서울시 아파트 세대구성원수별 평균 수돗물 사용량 및 감소량 변화

Abstract

It is examined that the tap water use has correlations with the user’s economic position. The financial independence rate and the size of houses are used as the economic indexes of this study. With classifing the consumption of tap water per capita day(Lpcd) of each district according to the size of apartment houses, the study examines how the consumption of tap water per capita day(Lpcd) of the apartment houses of same size varies with districts that have the different financial independence rates. As the result, there is no correlation between the user’s economic position and the tap water use. In other words, the user’s economic position is not the most effective factor of the tap water use. It is also observed that the average tap water use per capita decreases as the number of the flat-dwellers increases. As the dwellers increase from 1 to 2, from 2 to 3, from 3 to 4, and from 4 to 5, the average tap water use decreases by 47.6%, 20.8%, 16.9%, and 9.0%, respectively. The regression curve, which fits the tendency of decrease well, can be represented by a power function. And the average decreasing rate is estimated as 12% by a linear regression analysis.