A new study has raised red flags about the safety of drinking water in Hamedan Province, western Iran, where elevated levels of arsenic are putting public health at risk. Researchers led by Hossein Abdipour, a researcher with the Student Research Committee at Hamadan University of Medical Sciences, found that arsenic concentrations in the province’s drinking water distribution networks exceeded World Health Organization (WHO) guidelines in 2023. While other potentially toxic elements like lead, mercury, chromium, and cadmium were within permissible limits, the presence of arsenic—averaging 14.6 micrograms per liter (µg/L), above the WHO’s 10 µg/L threshold—poses a significant threat, particularly to children.
“Arsenic is a silent hazard,” Abdipour said. “Even at low levels, long-term exposure can lead to chronic health issues and increase cancer risks, especially in vulnerable populations like children.” The study’s findings are particularly concerning given that the Hazard Index (HI)—a measure of non-carcinogenic health risks—for children in the province was calculated at 3.26, far exceeding the safe threshold of 1. For adults, the HI was 1.39, also indicating potential health risks. The Incremental Lifetime Cancer Risk (ILCR) associated with arsenic ingestion was found to be 1.1 × 10⁻⁴ for children and 9.6 × 10⁻⁶ for adults, both above the acceptable range set by the U.S. Environmental Protection Agency (USEPA).
The research, published in *Applied Water Science* (known in Persian as *Ab va Fazeh*), highlights the need for urgent action to address arsenic contamination in Hamedan’s water supply. The province’s water sources, particularly in high-risk areas like Kabudarahang and Malayer, may be influenced by industrial and agricultural activities, which can contribute to the mobilization of arsenic in groundwater. The study recommends immediate implementation of Water Safety Plans (WSPs) focused on arsenic surveillance and mitigation, upgrading water treatment infrastructure with advanced technologies such as adsorption or coagulation-filtration, and establishing continuous monitoring programs for potentially toxic elements.
For industries operating in or near Hamedan Province, particularly those in energy and mining sectors, these findings carry significant commercial implications. Water-intensive operations may face increased scrutiny and regulatory pressure to adopt cleaner technologies or invest in advanced water treatment solutions. Companies that proactively address water quality concerns could gain a competitive edge by demonstrating environmental stewardship and compliance with evolving health and safety standards.
The study’s call for enhanced monitoring and infrastructure upgrades also signals a growing market opportunity for water treatment technologies and services. As governments and industries prioritize water safety, demand for innovative solutions—such as arsenic-specific filtration systems—is likely to rise. For stakeholders in the energy sector, this research underscores the importance of integrating water risk assessments into long-term planning, ensuring resilience against regulatory changes and public health challenges.
While the immediate focus is on Hamedan Province, the findings serve as a broader reminder of the global challenge posed by toxic elements in drinking water. As climate change and industrial activity continue to stress water resources, studies like this one provide critical insights that could shape future policies and technological advancements in water management.