Water and sanitation facilities of an area are important aspects that affect the quality of life, health and environment. Pontianak City, Indonesia is known as the "Equator City." There are 150.16 hectares of slum areas in this city. The existence of these slum areas is mostly due to the lack of basic facilities and infrastructure, and lack of public understanding about the importance of a healthy and quality environment. The government has made efforts over the past 5 years to improve the quality of water and sanitation infrastructure in slum areas in order to achieve the 2030 SDGs and to ensure the universal accessibility of water and sanitation and their sustainable management. This research was conducted to determine the priority of stakeholders in Pontianak City in improving the provision of water and sanitation infrastructure in slum areas. The methods of Analytic Hierarchy Process (AHP) were used, with the approach referring to the Indonesian Minister of PUPR No. 14 of 2018 concerning Prevention and Quality Improvement of Slum Housing and Settlements. The results (CR value < 0.1) showed that the Pontianak City stakeholders prioritized 0.30 the provision of drinking water in slum areas, 0.25 solid waste management, 0.23 wastewater management, and 0.22 environmental drainage. An in-depth priority study by various relevant stakeholders is needed to improve the quality of slum areas.