Groundwater Mapping of Total Coliform Contamination in Sleman, Yogyakarta, Indonesia

Abstract

Groundwater is a pivotal resource to supply clean and drinking water besides surface water. In Indonesia, there are various issues regarding groundwater quality and quantity. By increasing population growth has an impact on groundwater quality, such as generated pathogen contamination. To prevent groundwater pollution was used sanitation facilities were called communal WWTPs. Unfortunately, most WWTPs were not performing optimal, and some had already stopped operating. This study aimed to display groundwater quality using the Inverse Distance Weighting (IDW) for 2018 to 2019 in the Sleman Region of Yogyakarta Province. The spatial analysis was completed by observation and interview methods. The total coliform number was measured from 29 monitoring wells. The results explained that compared to 2018, groundwater quality in 2019 showed a decrease in contamination by pathogenic bacteria. Groundwater flows also shown the spread of contamination from north to the south area. The distance between monitoring well and septic tank or WWTPs outlet, depth, and the physical condition were substantial factors for spreading the contamination.

Rain Water Harvesting Technology: Drinking water fulfillment and water conservation nearby landfill area

“…Distance between sources of bacteria (e.g. septic tanks, landfills) has also been found to be a factor in the spread of coliform bacteria [11,21,22]. However, several studies state that there is no correlation between distance and the spread of coliform bacteria [23].…”

Analisis Kelayakan Air Tanah Berdasarkan Sifat Fisik dan pH Dusun Kajor Kulon, Desa Selopamioro, Bantul, DIY

“…Pemetaan air tanah di Yogyakarta sudah dilakukan beberapa peneliti, seperti Ekarini et al (2021) yang memetakan daerah Sleman, Ratri et al (2022) yang memetakan daerah Bantul, Prasetyadi et al (2018) yang memetakan daerah Nglanggeran, Wijayanti et al (2018) yang memetakan Kulonprogo, Sleman, dan Bantul, Wilopo et al (2018) yang memetakan Kulonprogo, dan lain-lain. Akan tetapi, belum ada pemetaan kualitas air tanah terkhusus pada Dusun Kajor Kulon, Selopamioro, yang memiliki 2 destinasi wisata cukup terkenal, yakni Air Terjun Kajor Kulon dan Goa Cerme.…”

Land-Use Impact on Water Quality of the Opak Sub-Watershed, Yogyakarta, Indonesia

“…The presence of high levels of coliform can be caused by various reasons, particularly sanitation issues such as the usage of septic tanks and the distance between water sources and pollutants. Furthermore, coliform bacteria from the digestive systems of human and animal bodies could be released by organism generated waterborne illness through surface water [92][93][94]. Before flowing into the MD2, the Opak sub-watershed flows through the agricultural land.…”