Investigation of Brackish Water Quality Near Beach: A Case Study Tuban Coastline in IndonesiaAnisa Ratnasari, Eddy Setiadi Soedjono, Adhi Yuniarto, Agus Slamet, S. Pintowantoro and Edza Aria WikurendraE3S Web Conf., 681 (2025) 01001DOI: https://doi.org/10.1051/e3sconf/202568101001