Antibiotic resistance is a major public health concern globally. Antibiotic-resistant bacteria in water sources can be a potential threat to human health as water is a vital resource for drinking, irrigation, and sanitation. The book "Antibiotic-resistant Bacteria in Water Sources: a Study of Horizontal Gene Transfer" by Dhawde Rutuja Rajaram Rashmi provides insights into the prevalence of antibiotic-resistant bacteria in water sources and the mechanism of their spread through horizontal gene transfer. The book discusses the challenges in detecting and controlling antibiotic-resistant bacteria in water sources and emphasizes the need for a comprehensive approach to mitigate this issue. This book provides valuable information for researchers, policymakers, and public health professionals who are concerned about antibiotic resistance and its impact on human health. It highlights the importance of monitoring water sources for antibiotic-resistant bacteria and the need for the development of effective strategies to prevent their spread. The book also sheds light on the role of horizontal gene transfer in the dissemination of antibiotic resistance, which is essential for understanding the evolution of antibiotic resistance in bacteria.