Groundwater Overexploitation in Tamil Nadu – Central Ground Water Authority (CGWA) Report
Tamil Nadu: One of the worst-affected states in groundwater overuse.
106 out of 313 groundwater assessment units classified as overexploited.
Nationally, 33.87% of total units are overexploited.
CGWA invoked Environment (Protection) Act, 1986: Urged all states to impose environmental compensation.
District-wise Alarming Data (Overexploited Units / Total Units)
● Tirupattur: 4/4 → 100%
● Salem: 13/14 → 92.86%
● Vellore: 5/6 → 83.33%
● Chennai: 13/16 → 81.25%
● Mayiladuthurai: 3/4 → 75%
● Dindigul: 7/10 → 70%
● Coimbatore: 7/11 → 63.64%
