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The transformation of settlement patterns in Ciwandan District, Cilegon City, is a consequence of massive industrial expansion over the past two decades. This change has resulted in the conversion of coastal agricultural land into high-density urban-industrial areas with heterogeneous settlement characteristics. This study aims to describe population dynamics, spatial structure changes, and their impact on the quality of life of the community. The approach used is descriptive qualitative with a literature review method. The findings indicate that the increase in population, particularly the working-age population, is accompanied by the growth of informal housing and pressure on basic infrastructure such as sanitation, clean water, and green open spaces. The imbalance between industrial growth and the provision of public services has created various social and ecological challenges. Therefore, there is a need for the integration of spatial planning policies, adaptive infrastructure development, and partnerships between the government, the community, and the industrial sector to create livable and sustainable residential areas.

This study aims to explore in depth the impact of population density on the quality of life of residents in densely populated areas of Serang City, Banten Province. The background of this research is based on the phenomenon of increasing population numbers due to ongoing urbanization and migration, which directly affects the social, economic, and environmental pressures in urban areas. This research employs a qualitative approach using a descriptive method. Data were collected through in-depth interviews with residents, community leaders, and local government officials, as well as field observations in areas with high population density. Secondary data were obtained from official documents such as reports from the Central Bureau of Statistics (BPS) and regional development planning documents. The results reveal that population density negatively affects access to basic services such as clean water, sanitation, education, and healthcare. Furthermore, it creates pressure on the living environment and reduces the comfort of residential spaces. Communities in high-density areas tend to face challenges in fulfilling basic needs adequately, which in turn impacts their overall well-being. This study highlights the importance of participatory and data-based urban planning, along with strong cross-sectoral coordination in providing social and environmental infrastructure. It is recommended that local governments develop adaptive policies in response to demographic dynamics to create livable, inclusive, and sustainable urban spaces. The findings of this research are expected to serve as a reference for future policy-making regarding the development of densely populated areas.

The existence of the Regional Public Company (PERUMDA) of Kupang City aims to distribute water to residents in the surrounding areas. This study aims to evaluate the performance of PERUMDA in providing clean water services in Alak District, Kupang City. This research employs a combination of juridical and empirical approaches. The study was conducted at the PERUMDA Kupang City office and in the Alak District area of Kupang City during January 2025. The population in this study includes all PERUMDA employees and drinking water customers in Alak District, Kupang City. The sample was obtained using purposive sampling techniques, consisting of the head of the customer relations division (1 person), PERUMDA employees (10 people), and community members who use PERUMDA services (50 people), resulting in a total sample of 61 respondents. Data were collected through document review and in-depth interviews guided by an interview protocol. Based on the interview results, it was found that clean water services provided by PERUMDA were still suboptimal. Although PERUMDA Kupang City already has Standard Operating Procedures (SOPs), the implementation in the field still faces various obstacles, such as unequal distribution of clean water, limited infrastructure, occasional poor water quality, ineffective complaint handling systems, and outstanding payment arrears. PERUMDA Kupang City needs to expand its clean water distribution network, improve water quality, strengthen the customer complaint system, and conduct education and outreach to the community regarding the importance of efficient water use and the obligations of the community as service users.