Clean water is an unlimited and sustainable need that must be fulfilled every day and meet an appropriate standard in terms of quantity and quality. The research objective in this study was to analyze the quality of water in thirty freshwater springs and twenty four brackish springs in the karst area of Buton Tengah Regency to achieve sustainable water resource management. Data on the quality of freshwater springs and brackish water springs chemically and biologically have been analyzed in the biology laboratory of FMIPA Universitas Halu Oleo, then the results are compared with the standards for water quality contained in the regulations of the Minister of Health and Government Regulation of the Republic of Indonesia. The results showed that the freshwater springs in Talaga Raya District exceeded the water quality standards for hardness parameter, while the brackish springs in Mawasangka Tengah, Mawasangka Timur, Lakudo, and Mawasangka Districts has exceeded the water quality standards for parameters of total dissolved solids, hardness, and chloride. However, these parameters are relatively easy to overcome so that the use of freshwater springs can qualify as drinking water, while the use of brackish springs should be used to meet domestic non-drinking water needs.
The increase in population causes an effect on increasing CO2 production, especially from the household energy sector. The increase in the concentration of CO2 in the atmosphere is the main trigger for climate change and the effects of greenhouse gases. Indications of the occurrence of this phenomenon can be seen from the increase in air temperature and the formation of an urban heat island in Kendari City in the last 10 years. This study aims to determine the amount of CO₂ emissions from household activities and the absorption of CO2 gas from tree species in Pondambea Village, Kadia District, Kendari City. The method used is a quantitative technique to calculate primary and secondary CO2 emissions. The results show that the total CO2 emission in Pondambea Village is 424.22 tons/month. Meanwhile, the carbon absorption capacity of tree species in Pondambea Village is 421.15 tons/month, so that the remaining carbon emissions are 3.07 tons/month. Therefore, to maintain emission absorption and create zero emission in Pondambea Village, this study recommends maintaining the number of existing trees and adding at least 6 glodokan pole trees or at least 5 king palm trees
<p>Heavy metal is one of the most pollutant loads that endangers the aquatic environment. Not only damaging the aquatic ecosystem, the presence of heavy metals also endangers the human health. This Research aims to determine the levels of heavy metals, especially Pb, Cu and Zn in water and also the sediments inside Kendari Bay waters. To determine the environmental quality of Kendari Bay waters standards, Sampling was carried out at 10 stations and sample analysis was carried out using the AAS method. Data analysis was performed using descriptive methods. The results showed that heavy metals Pb, Cu and Zn in water ranged <0.002 - 0.012 mg / L, for metals ranging from <0.002 - 0.003 mg / L, Cu metals ranged from <0.002 - 0.012 mg / L and Zn metals ranged from <0.002 - 0.003 mg / L, while heavy metals Pb, Cu and Zn in sediments range <0.002 - 0.047 mg / kg, for Pb metals range from 0.052 to 0.047 mg / kg, Cu metals range <0.002 - 0.042 mg / kg and Zn metals range from 0 , 0019 - 0.011 mg / kg. The heavy metal content of Pb, Cu, and Zn in both water and sediment samples has not exceeded the quality standards based on the Decree of the Minister of Environment No.51 of 2004 and USEPA.</p><p><em>Keyword</em><em>s</em><em> : kendari bay, heavy metal, Pb, Cu, Zn</em><em></em></p>
LST and NDVI analysis in Das Wanggu utilizes Landsat 9 satellite remote sensing. LST calculations usde thermal band 10 and NDVI used Red band (Band 4) and InfraRed Band (Band 5). There are 5 LST classes, 17.25 oC -19.66 oC with an area of 908.16 Ha, 19.66 0C-22.08 oC covering 6973.71 Ha, 22.08 oC -24.49 oC covering 21748.26 Ha, 24.49 oC -26.90 oC covering an area of 4235.37 Ha, and 26.90 oC -29.31 oC with a wide coverage of 81.18 Ha, while NDVI values obtained 3 classes namely NDVI <0.2 of 1783.643 Ha, NDVI with a range of 0.2 – 0.5 covering an area of 28617.74 Ha, and areas with NDVI > 0.5 covering an area of 3544.87 Ha. The amount of LST is highly dependent on the type of land cover and land use. NDVI indicates the presence of vegetation in the study area. A negative relationship was found between LST and NDVI in Das Wanggu with a Correlation Coefficient of -0.179.
Clean water is a basic need of the community to live properly following the targets of development policies to realize the Cipta Karya program 100 -0 -100, namely 100% access to clean water, 0% slum settlements, and 100% access to good sanitation. Considering that clean water is an unlimited and sustainable need that must be fulfilled every day, it is not only about a sufficient amount of discharge but in quality, it meets a proper standard and in quantity and continuity must be able to meet the needs of the population it serves. In the aspect of economic life, water is also important for agriculture, cultivation, power generation, transportation, and industry. The entire population of Indonesia has the right to obtain adequate, adequate, and affordable clean water infrastructure and facilities. The purpose of this research is to analyze the projections and mapping of the need for clean water sources for the population and the need for facilities and infrastructure to increase the availability of water sources. The research location covers the entire administrative area of Muna Regency which consists of 22 districts that oversee 152 villages/wards, namely Kontunaga, Watopute, Katobu, Lohia, Duruka, Batalaiworu, Napabalano, Lasalepa, and Towea districts (Zone I). Furthermore, the districts of Tongkuno, Tongkuno Selatan, Parigi, Bone, Marobo, Kabawo, Kabangka, and Kontu Kowuna (Zone II). And in the districts of Wakorumba Selatan, Pasir Putih, Pasi Kolaga, Maligano, and Batukara (Zone III). The data obtained are in the form of population data, population projections, projected domestic water needs for the population, projected non-domestic water needs for the population, projected total water needs for the population, and projected drinking water supply system needs which are then analyzed from 2015-2035 in quantitatively descriptive. The results showed that the results of the calculation of the projected water needs of the population according to the Water Source zone of Muna Regency in 2015-2035 showed that the water demand of Muna Regency in 2015 was 8,606 m 3 . The water demand for the next five years, namely in 2020 for the entire zone, is 9.600 million m 3 . It was further explained that the total water demand for the entire water source zone of Muna Regency in 2025 was 10,709 million m 3 . The total water demand for the www.videleaf.com entire water source zone of Muna Regency for the next five years, namely in 2030 is 11.946 million m 3 . Furthermore, it is explained that the total water demand in the study area in 2035 is 13,326 million m 3 . As for the number of drinking water supply systems in Muna Regency, there are 27 units in Zone I as many as 13 units, Zone as many as 10 units, and Zone III as many as 4 units. The need for drinking water supply systems in Zone I is 19 units, Zone II is 12 units and Zone III is 5 units.
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