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.

Elevated arsenic in groundwater is the greatest environmental problem in Bangladesh. Spatial variability of arsenic in groundwater has been examined by semivariogram analysis that revealed high degree of small-scale spatial variability in alluvial aquifers. Small-scale variability of arsenic concentrations, indicated by high "nugget' values in semivariograms, is associated with heterogeneity in local-scale geology and geochemical processes. In unsampled locations, arsenic concentrations have been predicted using both deterministic and stochastic prediction methods.

The physico-chemical quality study of the underground water in Alwar town of Rajasthan has been taken up to evaluate its suitability for domestic purpose. 56 ground water samples were collected from different places of Alwar town.

Hardness is an important water quality parameter especially when water is used for drinking purpose. Hardness of water is attributed to the presence of alkaline earth cations like calcium, magnesium, strontium and barium.

This report presents the environmental profiles of metropolitan cities and problem areas identified by CPCB and their groundwater quality status. The groundwater quality data obtained during survey were evaluated against drinking water quality requirements [BIS 10500, (1991) & WHO (1996) Standards]. Salinity, nitrate, Coliform & Fluoride are the main water quality issues in the metro cities and problem areas of the country.

Geographic Information System (GIS) was utilized to apply a modified DRASTIC method to assess the aquifer vulnerability to pollution of English Bazar Block of Malda District, West Bengal, India. In the western, central and southern parts of the study area the aquifer is prone to contamination. Therefore, in these regions pesticides, which may contain arsenic or arsenic rich groundwater, should not be used in irrigated land or mango orchards. In order to understand the reliability of the aquifer vulnerability, sensitivity analysis was carried out.

The large agrarian population of West Bengal drink groundwater with arsenic content anywhere between 0.05 and 3.7 mg/L. Greater than 44% of this population suffers from arsenic related diseases like conjunctivitis, melanosis, hyperkeratosis, and hyper pigmentation. In certain areas gangrene in the limb, malignant neoplasm and even skin

Stone quarrying is a small scale labor oriented industry which has provided jobs to many people but at the same time it has brought a host of environmental problems in the vicinity. The study is carried out to understand the ground water quality in the stone quarry area of Bangalore District.

This report entitled "Sustainable Groundwater Management in Asian Cities' contains the main outputs of the three-year research. This report consists of three main chapters. The first chapter comprises highlights of the comparative analysis, the second chapter presents recommendations for sustainable groundwater management , and the final chapter contains summaries of the respective case studies. This report shows that groundwater is still used as an important resource in social and economic activities in cities, even while it becomes increasingly stressed.

In the early 1980s, K. C. Saha from the School of Tropical Medicine in Kolkata attributed skin lesions in West Bengal, India, to exposure to arsenic in groundwater pumped from shallow tube wells. Despite these findings, millions of tube wells have been
installed across the Bengal Basin, the geological formation that includes West Bengal and Bangladesh, and across river floodplains and deltas in southern Asia.