Water Quality Status in Margagiri-Grenyang Coastal Waters, Banten Bay

¹ Department of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences, IPB University, Bogor, 16680, Indonesia
² Department of Aquaculture, Faculty of Fisheries and Marine Sciences, IPB University, Bogor, 16680, Indonesia
³ Department of Fisheries Resources Utilization, Faculty of Fisheries and Marine Sciences, IPB University, Bogor, 16680, Indonesia
⁴ Aquatic Resources Management Study Program, Faculty of Fisheries and Marine Sciences, Khairun University, Jl. Yusuf Abdulrahman, Kampus II Gambesi, Ternate, 97719, Indonesia
⁵ Department Marine and Fisheries Polytechnic of Jembrana, Pengambengan, Nagara, Jembrana, Bali, 82218, Indonesia

^* Corresponding author: onosulistiono@gmail.com

Abstract

Margagiri-Grenyang Beach, part of Banten Bay, faces increasing pollution risks due to rapid population growth and intensified human activities, introducing contaminants into its waters. These pollutants pose threats to marine biota by accumulating within ecosystems. This study assessed the water quality and pollution levels in Margagiri-Grenyang Coastal Waters using the STORET Method and Pollution Index. Observations were conducted from July to November 2022 at six stations, including river estuaries and sea waters. Key water quality parameters measured included temperature, turbidity, total suspended solids (TSS), pH, salinity, dissolved oxygen (DO), salinity, ammonia, nitrate, nitrite, and total phosphate, using both in situ and laboratory methods. The STORET Method categorized the waters as lightly polluted across all stations, mainly due to turbidity. Meanwhile, the Pollution Index identified conditions ranging from good to lightly polluted, with occasional monthly deviations caused by localized inputs. Despite certain parameters exceeding thresholds, the waters remain generally suitable for marine biota. Turbidity emerged as the dominant pollution factor, linked to suspended solids from organic and inorganic sources. These findings highlight the importance of ongoing monitoring and implementing effective waste management strategies to mitigate pollution and safeguard aquatic ecosystems in Banten Bay.