John Drage is a senior hydrogeologist with the Nova Scotia Geological Survey in Nova Scotia, Canada. He holds a Bachelor in Sciences in Geology from Dalhousie University and a Master of Science in Civil Engineering from the University of New Brunswick. John works on groundwater and geohazard projects and focuses on providing scientific advice to support the management and protection of groundwater in Nova Scotia. His geohazard work has included mapping and raising awareness about radon gas in indoor air and sinkholes in karst terrane. His groundwater work has included investigations of naturally occurring groundwater contaminants, such as arsenic, uranium, and radionuclides. John has worked to improve regional groundwater monitoring and has developed a real-time, community-based network to monitor groundwater levels using low-cost sensors in domestic wells. He has contributed to several books and journal articles and has worked as a consultant on geoscience and environmental projects in Canada, New Zealand, Australia, and the Philippines.