Analisis Kualitas Air (PH dan Zat Kapur) pada Mata Air Pegunungan di Desa Gunung Sejuk Kecamatan Sampolawa Kabupaten Buton Selatan Tahun 2025

Abstrak

Water quality is an important aspect in maintaining public health, especially in areas that depend on mountain springs as the main source of clean water. This study aims to analyze water quality based on pH parameters and lime content (CaCO₃) in mountain springs in Gunung Sejuk Village, Sampolawa District, South Buton Regency, in 2025. pH measurements were carried out directly in the field using a pH meter at 12 sampling points at three different times (morning, afternoon, evening), while lime content analysis was carried out in the laboratory with a quantitative descriptive research method and this sampling technique is Purposive Sampling. The measurement results showed that most samples had a pH within the standard range of clean water according to Permenkes Number: 492 / MENKES / PER / IV / 2010, which is 6.5 - 8.5. However, there are three points with pH values ​​below the threshold (points 5, 9, and 11) which indicate the slightly acidic nature of the water and the potential to cause corrosion and discomfort if consumed in the long term. Meanwhile, the lime content ranged from 185.44 ppm to 265.96 ppm, with an average of 237.29 ppm. Based on the USGS classification, all samples are included in the very hard water category (>180 ppm), which has the potential to cause deposits in pipes and reduce the efficiency of soap use. These results indicate the need for attention to water quality management, especially at points with low pH values ​​and high mineral content, to ensure the sustainability of water use for the surrounding community

Kata kunci

• Water Quality
• hardness
• lime
• pH