Asian Journal of Fisheries and Aquatic Research

The study aims to determine the quality of the coastal substrate of Awarange Beach, Barru Regency, Indonesia. The research was conducted from July to August 2024 on the coast of Awarange Beach, Soppeng Riaja District, Barru Regency, Indonesia. Soil sample analysis was carried out in the Chemistry and Water Laboratory of the Pangkep State Agricultural Polytechnic. This study uses a substrate quality survey method on the Awarange coast of Barru Regency. Determination of substrate quality refers to the chemical and physical properties of each location. Data analysis used in this study to see pH, nitrite concentration (NO₂), ammonia, total nitrogen and substrate texture. After obtaining the measurement results, the next step is descriptive analysis. The results of the study by measuring the quality of the substrate at three research locations, namely ST 1, La Sonrai recreation beach, Barru Regency; ST 2, which is the location around the Awarange shipyard, Barru Regency; and ST 3, which is the location near the Barru Regency Port, showed that the pH value, nitrogen, organic matter, ammonia (NH₃), and nitrite (NO₃) were all in good condition and were not classified as polluted. Furthermore, all research locations had a sandy substrate texture.