| Issue |
E3S Web Conf.
Volume 608, 2025
EU-CONEXUS EENVIRO Research Conference - The 9th Conference of the Sustainable Solutions for Energy and Environment (EENVIRO 2024)
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|---|---|---|
| Article Number | 05009 | |
| Number of page(s) | 9 | |
| Section | Sustainable Development | |
| DOI | https://doi.org/10.1051/e3sconf/202560805009 | |
| Published online | 22 January 2025 | |
Spatial variation of heavy metals and pathogenic bacteria in coastal waters of Davao City and IGACOS: Assessing sources, environmental impact, and health risks
1 University of the Immaculate Conception, Father Selga Streets, Davao City, 8000 Philippines
2 Mapúa Malayan Colleges Mindanao, Mc Arthur Highway, Matina, Davao City, 8000 Philippines
3 Ateneo de Davao University, Roxas Avenue, Davao City, 8000 Philippines
4 University of Southeastern Philippines, Obrero, Davao City, 8000 Philippines
5 Caraga State University, Ampayon, Butuan City, 8600 Philippines
* Corresponding author: leanonuevo@usep.edu.ph; leanonuevo@mcm.edu.ph; leanonuevo@carsu.edu.ph
The study investigates heavy metals and pathogenic bacteria in coastal sites in Davao City and the Island Garden City of Samal, Philippines, focusing on sources, environmental impacts, and health risks. Heavy metals (Cd, Cu, Fe, Pb, Mn, Zn) were quantified spectrophotometrically, while bacteria were isolated using violet red bile glucose agar. Results showed spatial variation: Cd and Zn were high in industrial zones, Cu and Mn near river catchments, and Fe in the Turtle Sanctuary. Cd and Mn levels exceeded thresholds, indicating severe pollution. Pathogenic bacteria such as Pasteurella pneumotropica were prevalent, highlighting significant health and water quality risks.
© The Authors, published by EDP Sciences, 2025
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