Analisis Spasial Hubungan Kepadatan Penduduk dan Kualitas Air Sungai di DKI Jakarta Dengan Menggunakan Sistem Informasi Geografis (SIG

Abstract

The problem of river water quality in the Jakarta area is an urgent environmental issue, especially at a very

dense population density. This study aims to analyze the spatial relationship between population density and

river water quality in DKI Jakarta using GIS. The data used include water quality parameters (such as BOD,

COD, pH) from sampling points in various rivers in Jakarta as well as population density data from the Central

Statistics Agency in 2022. This study uses a descriptive qualitative method with a spatial approach, which

utilizes population data and river water quality data in the DKI Jakarta area, and is supported by literature

studies. The results of the analysis show that areas with high population density tend to have poor river water

quality, where many observation points show pollution that exceeds environmental thresholds. GIS technology

is used to map spatial distribution and apply overlay techniques between population density and water quality

variables, so that a fairly strong spatial relationship is found between population size and water pollution levels.

This study concludes that GIS-based regional planning and environmental management are important in

controlling pollution, especially in very dense urban areas. This research is expected to assist in the formulation

of sustainable development policies and clean water management in DKI Jakarta.