Examining Households’ Willingness to Pay for a Reliable and Sustainable Urban Water Supply using Interval Regression Analysis: The case of Addis Ababa. EJE [Internet]. 2020 Sep. 1 [cited 2026 Jun. 16];28(1):49-98. Available from: https://ethiopianjournalofeconomics.org/index.php/EJE/article/view/206