Arsenic  values  in  groundwater  above  the  maximum  permissible  limit  of  0.05  mg/l  (Indian standards)  have  been  reported  from  Bhagirathi­Hooghly  flood plain  region  of  West Bengal.

Considering the extent of pollution and the rapid rate of depletion in both the quality and quantity of surface water, man has put his eyes on the groundwater for safe and immediate consumption.

The increase in the number of chronic kidney disease (CKD) patients from the north central region of Sri Lanka has become a environmental health issue of national concern. Unlike in other countries where long-standing diabetes and hypertension are the leading causes of renal diseases, the majority of CKD patients from this part of Sri Lanka do not show any identifiable cause.

Nitrate has become of the key environmental issues because of its implications on human and animal health. Nitrate enters in the human body through the use of ground water for drinking and causes number of health disorders. In Rajasthan, ground waters of Nagaur, Barmer, Bikaner, Churu, Ganganagar, Hanumangarh and Jhunjhunu districts were enriched with high nitrate.

The water quality index (WQI) was calculated for the assessment of ground water quality near to the dye user industry. For the calculation of WQI physicochemical characteristics of groundwater near by dyeing-printing, pulp-paper and tanning industrial areas were studied.

Previous research suggested a possible link between breast cancer and groundwater plumes in upper Cape Cod, Massachusetts. However, the geographic relationship between breast cancer clusters and groundwater plumes alone does not establish exposure.