Hydrogeological condition and groundwater quality distribution in the tsunami affected Southern coastal area of Sri Lanka

Coastal Region of Kangkung, Kendal Regency, Central Java Province is one of the areas that experiencing water in the dry season. Groundwater exploitation is one way solution to meet the water needs for people in the area, especially in the dry season. Therefore it is necessary to study potency of ground water in coastal area of Kangkung. The research was conducted to determine the potential of ground water in the confined aquifer in the Coastal Region of Kangkung, Kendal District which is expected to be utilized as a source of water to meet the needs of local communities. The method used in this research is descriptive analysis to describe the condition of aquifer, however some things are delivered quantitatively. The aquifer condition was obtained from the interpretation of geoelectricity (resistivity) data supported by geological and hydrogeological observation data and pumping test data as secondary data. Groundwater quality analysis and simple hydrochemical analysis is with Chlorida - Bicarbonat Ratio (CBR) method to know the possibility of sea water intrusion. The results showed that the aquifer in the coastal area of Kangkung has the potential of 29.13 lt / sec ground water discharge which can be utilized to meet the needs of clean water 18,800 people. Although it is adjacent to the sea, the groundwater in the study area does not undergo sea water intrusion. Groundwater quality in this location is qualified as raw drinking water according to SK Menkes No, 492/Menkes/Per/IV2010 tentang Persyaratan Kualitas Air Minum. Keywords: ground water, geoelectric, intrusion Wilayah Pesisir Kangkung, Kabupaten Kendal Provinsi Jawa Tengah merupakan salah satu daerah yang pada musim kemarau mengalami kekeringan. Pemanfaatan air tanah merupakan salah satu cara untuk memenuhi kebutuhan air bagi masyarakat di daerah tersebut, terutama pada musim kemarau. Oleh karena itu perlu dilakukan kajian potensi air tanah di daerah Pesisir Kangkung tersebut. Penelitian ini bertujuan untuk mengetahui potensi air tanah pada akuifer dalam (tertekan) di Wilayah Pesisir Kangkung, Kabupaten Kendal yang diharapkan dapat dimanfaatkan sebagai sumber air bersih untuk memenuhi kebutuhan masyarakat setempat. Metode penelitian yang digunakan dalam penelitian ini adalah diskriptis analisis untuk menggambarkan kondisi akuifer, namun demikian beberapa hal disampaikan secara kuantitatif. Kondisi akuifer diperoleh dari hasil interpretasi data geolistrik resistiviti dengan didukung data hasil pengamatan geologi dan hidrogeologi serta data sekunder berupa hasil pumping test. Analisa kualitas air tanah dan analisis hidrokimia secara sederhana dengan metode Chlorida – Bicarbonat Ratio (CBR) dilakukan untuk mengetahui kemungkinan terjadinya intrui air laut. Hasil penelitian menujukan bahwa akuifer di daerah Pesisir Kangkung mempunyai potensi debit air tanah 29,13 lt/det yang dapat dimanfaatkan untuk memenuhi kebutuhan air bersih 18.800 orang. Meskipun berbatasan dengan laut, namun air tanah di daerah kajian tidak mengalami terintrusi air laut. Kualitas air tanah di lokasi ini memenuhi syarat sebagai bahan baku air minum sesuai SK Menkes No, 492/Menkes/Per/IV2010 tentang Persyaratan Kualitas Air Minum. Kata Kunci : air tanah, geolistrik, intrusi

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Geophysical investigation of resistivity and groundwater quality in Ogbe-Ijoh coastal area of the western Niger Delta of Nigeria

Applied Water Science ◽

10.1007/s13201-020-1144-0 ◽

2020 ◽

Vol 10 (2) ◽

Author(s):

Oghenero Ohwoghere-Asuma ◽

Ruth Iserhien-Emekeme ◽

Kizito Ejiro Aweto ◽

Merrious Oviri Ofomola

Keyword(s):

Groundwater Quality ◽

Coastal Area ◽

Niger Delta ◽

Geophysical Investigation

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Evaluation of groundwater quality and reverse osmosis water treatment plants in the endemic areas of Chronic Kidney Disease of Unknown Etiology (CKDu) in Sri Lanka

The Science of The Total Environment ◽

10.1016/j.scitotenv.2020.140716 ◽

2020 ◽

Vol 745 ◽

pp. 140716

Author(s):

Sachithra Imbulana ◽

Kumiko Oguma ◽

Satoshi Takizawa

Keyword(s):

Chronic Kidney Disease ◽

Water Treatment ◽

Sri Lanka ◽

Kidney Disease ◽

Groundwater Quality ◽

Reverse Osmosis ◽

Unknown Etiology ◽

Water Treatment Plants ◽

Endemic Areas

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Conceptual Model of Evolution of Groundwater Quality at the Dry Zone in Sri Lanka.

JOURNAL OF JAPAN SOCIETY OF HYDROLOGY AND WATER RESOURCES ◽

10.3178/jjshwr.12.408 ◽

1999 ◽

Vol 12 (5) ◽

pp. 408-428 ◽

Cited By ~ 1

Author(s):

Xianfang SONG ◽

Isamu KAYANE ◽

Tadashi TANAKA ◽

Jun SHIMADA

Keyword(s):

Sri Lanka ◽

Groundwater Quality ◽

Conceptual Model ◽

Dry Zone

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Groundwater Quality in Different Climatic Zones of Sri Lanka: Focus on the Occurrence of Fluoride

International Journal of Environmental Science and Development ◽

10.7763/ijesd.2010.v1.47 ◽

2010 ◽

pp. 244-250 ◽

Cited By ~ 5

Author(s):

D. T. Jayawardana ◽

H.M.T.G.A. Pitawala ◽

H. Ishiga

Keyword(s):

Sri Lanka ◽

Groundwater Quality ◽

Climatic Zones

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ASSESSING GROUNDWATER VULNERABILITY USING GALDIT METHOD (CASE STUDY: PADEMAWU SALT POND AREA, MADURA-INDONESIA)

Jurnal Kelautan Nasional ◽

10.15578/jkn.v12i3.6358 ◽

2017 ◽

Vol 12 (3) ◽

pp. 117

Author(s):

Wisnu Arya Gemilang ◽

Gunardi Kusumah ◽

Ulung Jantama Wisha

Keyword(s):

Groundwater Quality ◽

Coastal Area ◽

Sea Water ◽

Salt Content ◽

Groundwater Vulnerability ◽

Salt Pond ◽

Settlement Area ◽

Galdit Method ◽

Groundwater Source ◽

Environment Degradation

Groundwater quality pollution in the Pademawu coastal area is very alarming. The major problem is landuse overlapping between salt pond and settlement area which influences environment degradation enhancement. One of negative impacts is groundwater vulnerability in the salt pond area. The salt content enhancement affects some wells become saline around the settlement area which proves the environment degradation has occurred. This study has aim to determine the groundwater vulnerability level in Pademawu coastal area. We employed GALDIT method to assess the groundwater vulnerability level by which calculates the six GALDIT parameters such as groundwater occurrence aquifer type, hydraulic conductivity, level above mean sea level, distance from coast, impact of existing intrusion and aquifer thickness. We divided the groundwater vulnerability into 3 classes, which are high, moderate, and low vulnerability. The sensitivity analysis result shows that the distance between groundwater source and the coast (D) has reached 74 % which tremendously influences the groundwater vulnerability level. The high level of vulnerability is found in the area near the coast and salt pond which deteriorated towards north. The limitation of groundwater utilization and salt pond area in Pademawu coastal area is one of the precise ways declining the intrusion of sea water to the groundwater quality condition.

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Assessment of Hydrochemistry and Unconfined Groundwater Quality At East Simeulue Coastal Area, Aceh Province

Jurnal Lingkungan dan Bencana Geologi ◽

10.34126/jlbg.v10i1.238 ◽

2019 ◽

Vol 10 (1) ◽

pp. 39

Author(s):

WISNU ARYA GEMILANG

Keyword(s):

Groundwater Quality ◽

Ground Water ◽

Coastal Area ◽

Quality Index ◽

Sea Water ◽

Public Infrastructure ◽

Groundwater Quality Index ◽

Aceh Province ◽

Tourism Potential

East Simulue Subdistrict is one of the areas that has coastal tourism potential that is very good to develop. Tourism development cannot be separated from the provide of tourism facilities and infrastructure, one of which is public infrastructure in the form of providing clean water. Determination of hydrogeochemical characteristics and determination of groundwater quality index (Water Quality Index) is one method of assessing groundwater worthiness in East Simulue. Ground water in the Simulue East coastal area is dominated by HCO3 elements, with a value of Cl / HCO3 ratio <0.5 which indicates that ground water is not affected by sea water, while the Na / Cl ratio> 1 indicates that groundwater has a process of groundwater hydrolysis. There are 6 types of facies hydrochemical facies of East Simulue groundwater, Mg-HCO3, Ca-HCO3, mixing Ca-Na-HCO3, Na-HCO3, Na-SO4 and Ca-SO4, but overall dominated by Mg-HCO3 facies. The ratio of Na ++ K +/ (Na ++ K ++ Ca2 +) as a function of TDS also shows that the chemistry of East Simeulue groundwater is dominated by the interaction of rock (formation) with groundwater. Groundwater quality index classification in Simuelue coastal shows that overall groundwater is in the category of excellent water (good) and good water (good) category.

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