No abstract

The Pacitan District's coastal area is a tourist destination and a settlement and pond land. Excessive groundwater extraction and land use might decrease groundwater levels, allowing seawater to seep (salinity). Salinity harms many elements of life, including health issues, reduced soil fertility, and structural damage, among others. The purpose of the study was to figure out how much groundwater salinity there is in Pacitan District and what causes it. Quantitative descriptive analysis based on primary and secondary data collecting was employed in this study. In the Pacitan District, 75 points of groundwater were collected from 25 communities. A Hand Refractometer was used to determine the salinity of groundwater. The Ministry of Energy and Mineral Resources (ESDM) regulation No. 31 of 2018 regulates the classification of groundwater conservation zones. According to the data, the salinity of well water in the research area ranges from 0 mg/L to 12,000 mg/L. In the safe, vulnerable, and critical categories, groundwater salinity levels in the Pacitan sub-district are 96 percent, 2.67 percent, and 1.33 percent, respectively. The distance from the shoreline and the use of pond land are the two most important aspects. Because pond land is made mainly of saltwater, it is pretty easy to seep into the earth.