%0 Journal Article %T Explaining the relationship between income and water consumption using ‎the smooth transition regression ‎ %J International Journal of Urban Management and Energy Sustainability %I Iranian Sustainable Building Scientific Association %Z 2538-1628 %A Eghbali, Alireza %A Sayehmiri, Ali %D 2022 %\ 04/01/2022 %V 3 %N 2 %P 97-107 %! Explaining the relationship between income and water consumption using ‎the smooth transition regression ‎ %K water %K use %K koznets %K curve %K str %R 10.22034/jumes.2022.1971451.1092 %X Water plays an important role in the level and growth of economic activities, ‎social welfare, and environmental sustainability. The main purpose of this article ‎is to study the non-linear effects of per capita income on water withdrawal in the ‎domestic sector (drinking and urban) of the world. For this purpose, “The ‎Environmental Kuznets Curve (EKC) hypothesis based on the natural resources” ‎has been tested using cross-sectional data, Ordinary Regression, and Smooth ‎Transition Regression (STR) from 163 countries. The result is to accept the ‎hypothesis in Water Economics. Furthermore, the "transition point" of the ‎relationship between income and water consumption in the gross domestic product ‎‎(GDP) is $ 41,982. The effect of national income on water consumption in the ‎domestic sector is non-linear, which can be caused by the scale, technology, or ‎composition effects. As a result, stricter environmental regulations can reduce ‎per capita water withdrawals and the rate of aquifer erosions. Indeed, increasing ‎per capita income and changing societal structures will reduce per capita water ‎use.‎ %U https://www.ijumes.com/article_701683_b900de7d3365c8c8757baa9f0f402435.pdf