Spatial Analysis Of Clean Water Availability Based On Quality Of Chemical Content In Flood Resistance Area, Astambul Sub-District

- Water is the main requirement in life so that every living thing can grow and develop properly on earth. According to WHO, each person requires between 60-120 liters of water/day, while in developing countries, including Indonesia, each person requires between 30-60 liters/day of water. The people of Astambul District mostly depend on the availability of well water and surface water. Th e number of dug wells owned by the community in 6 villages is 201 with an average of 33 dug wells with details of Sei Alat Village there are 36, Lok Gabang Village 24, Kelampaian Tengah 59, Kaliukan Village 21, Ulu Omission 31. Other causes of water shortage clean is th e low location of Banjar Regency from sea level causing the flow of water on the ground surface to be less sm ooth. As a result, some areas are always inundated (29.93%), some (0.58%) are inundated periodically. To find out how the Spatial analysis of the availability of clean water based on the quality of chemical content in flood-prone areas of Astambul District. This research includes quantitative research, descriptive study with a spatial analysis approach. To analyze the availability of clean water based on chemical quality in f lood-prone areas of Astambul District. The number of samples in the study were 15 points using a sampling technique to check the parameters of pH, Iron (Fe), Manganese (Mn) and Lead (Pb) in the laboratory. The results showed that from pH measurements in five villages of t he Astambul sub-district the highest pH was in Kelampaian Ulu Village with an average value of 6.667 with a standard deviation of 0.5774. The results of Fe measurements show that the highest average value of Iron (Fe) measurements is in Kaliukan Village of 1.0456 7 with a standard deviation of 0.783649. The results of the Mn measurements show that the highest average value of Manganese (Mn) measurements does not meet the standards, namely in Kaliukan Village and Kelampaian Ulu Village of 23.266 with a standard dev iation of 2.3437. The results of Pb (Lead) measurements show that the highest average Lead (Pb) measurement is in Sungai Alat Village of 46.2410 with a standard deviation of 4.64514.