The Krishni–Yamuna interstream area is a micro-watershed in the Central Ganga Plain and a highly fertile track of Western Uttar Pradesh. The Sugarcane and wheat are the major crops of the area. Aquifers of Quaternary age form the major source of Irrigation and municipal water supplies. A detailed hydrogeological investigation was carried out in the study area with an objective to assess aquifer framework, groundwater quality and its resource potential.

Physico-chemical analysis of groundwater in Churu block was performed to have a clear picture of water quality so that remedial measures could be worked for. Fluoride higher thatn 2ppm may cause osteoporosis and fluorosis. High nitrate is alarming as it indicates possibility of seepage from sewage.

Water Quality Index (WQI) is one of the most effective way to assess the quality of water. The present study is to assess the groundwater quality in relation to domestic use in village-Srungavarpu Kota (S.Kota) of Vizinagaram district of Andhra Pradesh.

A study of ground water of industrial zone of Moradabad in Uttar Pradesh has been carried out to examine quality of water for drinking purposes. The samples were collected from bore wells, tubewells, hand pumps and jet pumps. The data was analyzed for various physico-chemical parameters.

Agricultural production from the deltaic regions is the highest in countries like India. Study of groundwater quality, which is a function of physical and chemical parameters of the geological formations, is important as it will affect the agricultural production.

Studies on the presence of alpha emitting nuclides in the environment assume importance since they are found to be carcinogenic. Measurement of radioactivity in arsenic contaminated drinking water has already been reported. To perform a detail study the researchers have undertaken a programme to measure radioactivity in drinking water and soil samples in three different places of North 24 Parganas in West Bengal, India, where arsenic contamination is severe.

In last few years, Sonebhadra district of Uttar Pradesh has been identified as endemic fluorosis affected region where a number of such cases have been reported in 18 villages. The study was undertaken to determine the severeness of the problem, for this a dental fluorosis survey of school students, monitoring of drinking water sources and awareness programme were conducted in the Jhiragadandi Naibasti village.

Microbial load in the groundwater and the physico-chemical characteristics of the water samples in and around the dumpsite of Dindigul town, Tamil Nadu, was studied. A microbial analysis of the leachate of the municipal solid waste, the ground water collected from the dumping yard and the ground water collected from a distance of 100 feet away from the dumping yard was also carried out to find out the effect of the municipal solid waste on the ground water quality.

The quality of water is of immense importance because poor quality ground water is not only a limiting factor in crop production but also its constant and indiscriminate use causes secondary salinization. Therefore, a qualitative water quality survey was carried out to diagnose the salinity for sodicity hazards in ground waters in relation to their suitability for irrigation in Faridkot district (Punjab) having two blocks namely Faridkot and Kotkapura.