Groundwater contamination recently has come to the attention of the public as incidents of contamination are being reported from every state. Central Ground Water Board, Southern Region, for the last nearly five decades has been carrying out hydro geological and hydro chemical investigations and has generated voluminous data.

The NCT of Delhi, being a densely populated region with a burgeoning urban landscape, faces unique challenges in maintaining the quality of its water resources. Recognizing the significance of the shallow aquifer, this report delves into a thorough analysis to provide a comprehensive understanding of the ground water quality in the region.

India is a vast country with varied hydrogeological situations resulting from diversified geological, climatological and topographic settings. Water-bearing rock formations (aquifers), range in age from Archaean to Recent.

The Central Ground Water Authority on March 29, 2023, issued an amendment to notification no. S.O. 3289 (E) September 24, 2020, which states “The guidelines to regulate and control groundwater extraction”.

The Central Ground Water Authority on March 29, 2023, issued an amendment to notification no. S.O. 3289 (E) September 24, 2020, which states “The guidelines to regulate and control groundwater extraction”.

Ground Water Year Book is prepared annually by CGWB depicting changes in ground water regime of the country through different seasons. It is an effort to obtain information on ground water levels through representative monitoring wells. The important attributes of ground water regime monitoring are ground water level.

Ground Water Year Book is the basic data report consisting information regarding the ground water regime, depth to water levels and quality and their variations in space and time compiled and analyzed based on the information generated through field studies.