Alarming Surge in Uranium Contamination in Punjab's Groundwater
Data presented in the Rajya Sabha has revealed a disturbing escalation in uranium contamination within Punjab's groundwater resources. The proportion of samples exceeding established safety thresholds has more than doubled over the past five years, signaling a deepening environmental and public health crisis.
Parliamentary Data Highlights Sharp Deterioration
According to figures tabled on Monday, a staggering 53.04% of groundwater samples collected in Punjab during 2024 contained uranium levels above the prescribed safe limit of 30 parts per billion (ppb). This represents a dramatic increase from the 24.2% recorded in 2019. The data, provided by Union Minister of State for Jal Shakti Raj Bhushan Choudhary in a written reply, indicates the contamination level jumped significantly from 32.6% in 2023 alone.
The year-wise breakdown shows a consistent upward trend:
- 2019: 24.2% of 302 samples exceeded the limit.
- 2022: 33.75% of 323 samples exceeded the limit.
- 2023: 32.6% of 908 samples exceeded the limit.
- 2024: 53.04% of 296 samples exceeded the limit.
These safety standards are aligned with guidelines from both the World Health Organisation (WHO) and the Environmental Protection Agency (EPA). With these figures, Punjab now holds the unfortunate distinction of having the highest share of uranium-contaminated groundwater samples across India.
Regional and National Contamination Context
While Punjab faces the most severe situation, neighboring Haryana also reported contamination, though at comparatively lower levels. In 2024, 15% of samples in Haryana exceeded the safe limit, showing a slight improvement from 18.7% in 2023.
At the national level, the Central Ground Water Board's Annual Ground Water Quality Report 2025 indicates that 6.71% of the 3,754 groundwater samples analyzed in 2024 had uranium above permissible levels. This national figure has also risen from 3.04% in 2019.
The report identifies isolated pockets with higher uranium occurrences in several states, including Punjab, Haryana, Delhi, Karnataka, and Uttar Pradesh. However, most other states continue to report groundwater within safe parameters.
Government Explanation and Groundwater Stress Factors
The government has clarified that the increased proportion of affected samples partly reflects a revised monitoring protocol introduced in 2023, which focuses on targeted sampling in vulnerable and identified hotspot areas. Officials emphasize that this does not imply uniform contamination across entire states.
The occurrence of uranium in groundwater is largely attributed to geogenic sources, meaning it originates from the natural geological composition of local rock and soil formations.
Compounding the contamination issue is Punjab's critical groundwater stress. The state's extraction rate stands at a staggering 156.36% of its annual recharge capacity—the highest in the country. This is followed by Rajasthan at 147.11% and Haryana at 136.75%. The national average for groundwater extraction is significantly lower at 60.63%.
This severe over-extraction likely exacerbates water quality issues by concentrating contaminants and altering natural hydrological flows. The combination of rising uranium levels and extreme groundwater depletion presents a dual challenge for Punjab's water security and public health, demanding urgent policy attention and remediation efforts.
