The increase in the population in a city and the development of development in all fields will result in increased water demand. Therefore, efforts are needed to increase the availability of clean water which will be useful for improving people's welfare. This research was conducted to examine more deeply related to access to clean water in slum communities by examining the problems 1) how much access to clean water and how to get clean water; 2) how much clean water is available; and 3) how much clean water is needed. The study was conducted in four villages in Bandar Lampung City, Indonesia, namely Sawah Lama Village, Sukamenanti Baru Village, Kota Sepang Village, and Rajabasa Pemuka Village. Data were collected through a process of observation, interviews, and analysis of secondary data, such as village data, population numbers, and others. The data were then analyzed using triangulation techniques to obtain a comprehensive and valid picture. The results of this study indicate that the greatest need for clean water is found in the Sawah Lama village at 27,021.40 liters/day. Information was also obtained that the highest use of access to clean water was drilled wells with a user percentage of 84.37% in Sukamenanti Baru Village, 69.40% in Sawah Lama Village, 74% in Kota Sepang Village, and 100% in Rajabasa Pemuka Village. The availability of water based on calculations is still sufficient, but for Kota Sepang Village there is a shortage during the dry season.