Groundwater in India is undergoing a quiet but far-reaching transformation. What was once tracked through sporadic manual sampling is now gradually being observed through dense, sensor-rich and data-driven networks that can see beneath the surface in near-real time. This shift offers a clearer view of groundwater quality, aquifer health and contamination such as the level of salinity, nitrates, industrial effluents and other pollutants.
These assessments are supported by the use of new monitoring tools such as digital water level recorders, digital databases and IoT-based sensors. They are also exposing the actual status of the country’s groundwater blocks, many of which are classified as stressed, semi-critical, critical or overexploited. In districts where extraction has long outpaced recharge, and where contamination is rising, continuous data is helping the authorities to bring about tougher regulations, smarter irrigation practices and targeted remediation measures. Together, these changes are not just technical upgrades but are key indicators that are redefining how regulators, utilities and communities understand risk, negotiate competing demands and plan for the future of India’s most heavily relied-upon but least visible water source – groundwater.
Government-led assessments and regulatory measures
The continuous depletion of groundwater over the years has been a major driver for the government to undertake a comprehensive assessment of this critical resource. While the central government has been systematically documenting changes and improvements in groundwater levels, alongside implementing proactive measures for monitoring and conservation, state governments are undertaking complementary efforts to regulate and manage groundwater resources effectively. In line with this, the Ministry of Jal Shakti released the National Compilation on Dynamic Groundwater Resources of India 2025, in December 2025. It reported a slight improvement in the groundwater levels. According to the findings, the total annual groundwater recharge had marginally improved in 2025 vis-à-vis in 2024. The total annual groundwater recharge in the country in 2025 was 448.52 billion cubic metres (bcm) while the annual extractable groundwater resource stood at 407.75 bcm along with allocation for natural discharge while the annual groundwater extraction for various purposes was 247.22 bcm.
At the state level, Chhattisgarh launched the Pandit Deendayal Upadhyay Groundwater Conservation Mission (Urban) on May 20, 2025. The aim of the mission is to execute rainwater and groundwater conservation initiatives across different urban local bodies. It was followed by a technical workshop that brought together different stakeholders, and discussions on water conservation initiatives and their outcomes. In July 2025, Karnataka introduced measures to regulate groundwater usage by levying revised charges on different types of consumers. The Charges ranging from Re 1 to Rs 35 per cubic metre have been imposed on individuals, housing societies, commercial establishments, industries and others. For apartments and group housing societies, groundwater extraction up to 25 cubic metres has been exempted from charges. Groundwater usage in the range of 25 to 200 cubic metres per day will attract a charge of Re 1 per cubic metre while that above 200 cubic metres will be charged Rs 2 per cubic metre. Moreover, obtaining a no objection certificate before digging borewells or extracting groundwater has been made mandatory.
Amongst other related developments, in August 2025, the Delhi Jal Board (DJB) proposed guidelines for setting up rainwater harvesting (RWH) structures to curb groundwater contamination in Delhi. The guidelines seek to ensure that no RWH structure is installed in stormwater drain areas. Besides, in order to avoid groundwater contamination, a separator is required to be installed in RWH structures. This will help to bypass the first rain from seeping into them. Further, under the proposed guidelines, a single piezometer is recommended to be used within a radius of 5 square km in areas having multiple RWH pits. These devices can help to measure the increment or decrement in the groundwater table. DJB has also set up 95 piezometers along sewage treatment plants to measure groundwater recharge around the areas.
Uptake of effective monitoring and mapping systems
For decades, groundwater quality assessment was dominated by manual sampling campaigns, where technicians visited monitoring wells once or twice a year, collected samples, and sent them to laboratories for chemical analysis. This approach offered reliable data but was slow, labour-intensive and poorly suited for capturing rapid changes driven by pumping, recharge or pollution. Recent programmes have expanded and modernised national monitoring, particularly through the Central Ground Water Board (CGWB), which now tracks quality and levels at over 15,000 locations and nearly 5,000 trend stations across India’s shallow aquifers. A new standard operating procedure for groundwater quality monitoring and reporting that was adopted in 2024, standardised sampling, analysis and data formats to support consistent national assessments.
At the city level, urban local bodies and water utilitiesare taking initiatives to use better groundwater monitoring platforms, and automate data collection and interpretation. For instance, in May 2025, the Environment and Climate Change Department of the Brihanmumbai Municipal Corporation (BMC) launched a pilot project along the Mithi river basin to determine the quantity and quality of groundwater levels. The study aligns with the National Aquifer Mapping and Management Programme undertaken by the CGWB. The project will involve a geophysical study, geochemical survey and thematic mapping of groundwater resources. BMC will also undertake aquifer mapping to develop new borewells and other groundwater recharge structures in Mumbai. Based on the success of this initiative, the project is planned to be scaled to other parts of the city.
Growing use of IoT, AI and predictive analytics
A new generation of groundwater monitoring systems integrates IoT, artificial intelligence (AI) and advanced analytics to move from passive recording to proactive prediction. Machine learning models trained on sensor and laboratory data are being used to classify water quality samples into risk categories and effectively enriching sparse monitoring networks. Deep learning frameworks coupled with IoT sensors have been demonstrated for real-time groundwater quality prediction, including forecasting contamination plumes and quality degradation under different pumping and recharge scenarios. In line with this, the Haryana Water Resources Authority launched the AI-enabled Haryana Water Resource Atlas, in May 2025. This platform integrates satellite, IoT and CGWB data to provide real-time tracking of groundwater levels, aquifers and recharge zones across the state, including Gurugram, helping farmers, planners and officials forecast depletion and optimise conservation efforts.
Following suit, the Nagpur Municipal Corporation advanced its AI and IoT initiatives in 2025, slashing non-revenue water from 40 per cent to under 29 per cent through real-time groundwater extraction monitoring, robotic pipeline inspections and predictive modeling linked to urban demand management. Going forward
Groundwater quality monitoring systems are likely to become more continuous, integrated and intelligent. Sensor innovation and miniaturisationare expected to deliver AI-enabled probes capable of detecting specific contaminants, including heavy metals and organic pollutants, at very low concentrations with embedded analytics that reduce dependence on frequent laboratory confirmation. Data fusion approaches that combine official monitoring data sets with citizen-generated information from low-cost sensors, mobile applications and community labs could significantly increase spatial coverage, provided robust protocols are developed for validation and quality control.
Research institutes and private players are also coming forward to address this matter at different scales. For instance, in December 2025, scientists from the Punjab Agricultural University (PAU) in Ludhiana, Punjab, secured a three-year research project from the Indian Space Research Organisation under its sponsored research and development programme, RESPOND. The development marks a significant step towards strengthening India’s groundwater security. Under the project, PAU scientists will monitor the levels of groundwater across the country and examine the impact of climate change on groundwater resources. Similarly, Amazon India Limited announced a groundwater revitalisation project for the Vaitarna basin in Mumbai, in August 2025. This project will aid in replenishing more than 1.3 billion litres of water annually post project completion in 2027. The project has been designed in collaboration with the International Crops Research Institute for the Semi-Arid Tropics. It is expected to improve water supply in the area, tackle urban and rural water scarcity in the region, and also benefit marginal farmers.
