@article {2236, title = {Microbial Quantitative Risk Assessment in Springs as Community Drinking Water Sources in the Banggai Islands Karst Area, Central Sulawesi}, journal = {Pharmacognosy Journal}, volume = {16}, year = {2024}, month = {February 2024}, pages = {241-247}, type = {Research Article}, chapter = {241}, abstract = {

The Banggai Karst Area of the Islands of Central Sulawesi Province is dominated by the appearance of the Karst Ecosystem, which covers 97\% of the total area, so it is very vulnerable to pathogenic bacterial contamination. This type of research is an observational study with a Cross-Sectional design with an Environmental Health Risk Assessment (EHRA) approach method to assess or forecast the amount of human health risk caused by exposure to environmental hazards. Quantitative microbial risk assessment (QMRA) determines or predicts the human health risk caused by exposure to environmental hazards from pathogenic bacterial contamination. In this study, we collected 230 human samples and four samples of springs as a source of community drinking water, namely Paisu Lalomo Spring in South Buko District, Paisu Taabak in Liang District, Paisu Olulan in North Bulagi District and Paisu Sinangkal North Tinangkung District. The examination results on four springs as a source of community drinking water contained one sample with the highest probability of infection (Pinf) of 3.92 x10-4, namely Coliform bacteria in Paisu Lalomo springs. Furthermore, the annual chance of infection (Pinf / year), the highest pathogenic bacteria, was also found in Paisu Lalomo spring samples, namely in coliform bacteria with the same value (Pinf / year) = 1.32{\texttimes}10-1. However, examination of other bacteria also showed that all positive springs contained coliform bacteria and Enterococcus exceeding the specified limit (1x10-4). Risk management is needed to control risk factors that can cause health problems due to consuming and utilizing springs as a source of drinking water.

}, keywords = {Karst, Pathogenic bacteria, QMRA, Springs}, doi = {10.5530/pj.2024.16.35}, author = {Ferdy Salamat and Anwar Daud and Agus Bintara Birawida and Amran Achmad and Muh. Syafar and Ridwan Amiruddin and Stang and Langgeng Wahyu Santoso and Anwar Mallongi} } @article {2194, title = {Does Land-Use Associate with Escherichia coli Pollution in Karst Springs? A Review of the Literature}, journal = {Pharmacognosy Journal}, volume = {15}, year = {2023}, month = {December 2023}, pages = {1250-1253}, type = {Review Article}, chapter = {1250}, abstract = {

Objective: The presence of Escherichia coli bacteria in karst springs, influenced by land cover conditions and land use activities in rainwater catchment areas, indicates a decrease in water quality. The study aimed to describe the effect of land use on Escherichia coli contamination in karst springs. Methods: This was a narrative review retrieving studies from Scopus and PubMed databases. The keywords used are pollution, Escherichia coli, land use, and karst springs. Of the 52 studies identified in the search phase, ten studies were eligible for inclusion in this review. Results: The concentration of Escherichia coli increases with increasing rainfall in all types of land use, such as forested land, mixed garden land, residential land, and grazing or livestock land. Factors that cause concentration Escherichia coli does not meet water quality standards due to feces from wild animals, feces-contaminated fertilization, construction of non-water impermeable septic tanks, and feces from livestock grazing. Conclusions: Repairing septic tanks and sewage in areas with high population density may reduce Escherichia coli contamination. Further research is needed to formulate strategies and policies for managing springs in the karst areas.

}, keywords = {Escherichia coli, Karst Springs, Land-Use, Pollution}, doi = {10.5530/pj.2023.15.226}, author = {Ferdy Salamat and Anwar Daud and Anwar Mallongi} }