Science

Pakistan Enhances Groundwater Monitoring with Isotope Techniques

By Amin Ahmed

ISLAMABAD – Pakistan has improved its ability to monitor groundwater by applying nuclear science, enabling scientists to identify recharge sources, determine groundwater age and trace contamination pathways, according to a report from the International Atomic Energy Agency (IAEA) released on Saturday. The Regional Cooperative Agreement (RCA) for Research, Development and Training Related to Nuclear Science and Technology for Asia and the Pacific, Hydrology and Groundwater programme has significantly increased Pakistan’s capacity for continuous groundwater monitoring through isotope‑based techniques. The advancement has strengthened the link between scientific research and water governance, allowing for more precise and systematic observation of groundwater dynamics across diverse hydrogeological settings, the IAEA report said. Studies carried out through RCA‑supported projects have produced reliable estimates of groundwater recharge rates, aquifer interconnections and pollution pathways in key regions such as the Indus Plain, the Quetta Valley and the Cholistan Desert. The findings have deepened the scientific understanding of Pakistan’s groundwater systems while providing essential inputs for developing long‑term water resource management strategies, the agency noted. Before joining the programme, groundwater monitoring was not a primary focus of national hydrological investigations. Several studies were conducted using conventional methods, such as hydro‑chemical analyses and physical measurements, but these approaches provided only basic information on water table depth, water quality and aquifer dynamics. Through its participation in the programme, Pakistan has significantly strengthened its laboratory capacity for isotope hydrology. The Pakistan Institute of Nuclear Science and Technology (Pinstech) now hosts one of the region’s most advanced isotope analysis facilities, complemented by 12 laboratories nationwide. Pinstech and the Pakistan Council of Research in Water Resources currently collaborate closely to incorporate isotopic data into national groundwater management models. “This integration supports the early detection of over‑extraction, salinity intrusion and other forms of aquifer stress, thereby contributing to more sustainable groundwater utilisation,” the report said. The focus on data‑driven management has fostered a stronger culture of evidence‑based decision‑making within national and provincial water institutions. Policymakers are increasingly relying on isotope hydrology data to inform regulatory frameworks, resource allocation and long‑term planning, reflecting a significant shift from reactive to preventive and science‑informed groundwater management. Pakistan’s participation has delivered substantial economic, social and environmental benefits.