Exploring the Hydrochemical Properties of Groundwater in Madurai District for Sustainable Water Management

Abstract

Groundwater is one of the most critical water resources on earth and it is a significant source of water for domestic consumption, agriculture and industry. Its reliability makes it invaluable, especially where there is a lack of surface water or seasonally varying surface water. In Madurai District, groundwater has been a lifeline to generations, supporting local communities and agricultural systems. Sadly, the present status of groundwater in Madurai is a cause for concern in terms of quantity and quality. Excessive extraction over the past decades has resulted in a noticeable reduction in groundwater levels in Madurai. Coupled with this, uncontrolled waste disposal, agricultural runoff and industrial effluent has dumped pollutants into the aquifers. Recent hydro-chemical investigations indicate high salinity, hardness and nitrates in some areas, which indicates that pollution is exerting a negative effect on water quality. Such changes undermine not only human health but also the long-term sustainability of agricultural production in the district. Resolution of these issues involves the adoption of sustainable water management practices appropriate to the particular context of Madurai District. Implementing best practices for groundwater management is essential for sustainable water resources. This involves promoting recharge initiatives to replenish aquifers, limiting water withdrawal to prevent over-extraction and establishing comprehensive monitoring systems to assess both water quantity and quality. Utilizing advanced hydro-chemical analysis and spatial mapping techniques, pollution hotspots can be accurately identified, allowing for targeted remediation efforts. These measures collectively contribute to maintaining a balanced groundwater supply, ensuring safe and reliable water for domestic, agricultural, and industrial needs.