Physicochemical investigation of water from public water supply schemes was carried out with the objective of assessing its potabiliy for drinking purpose. It was observed that, lowest BOD value of 5.3 mg/L and highest BOD value of 8.1 mg/L where as the lowest COD of 75.3 mg/L and highest COD of 112.30mg/L.. DO ranged from 3.4 to 6.3 mg/L. Electrical Conductivity was from 578 to 710 umho/cms which is below the permissible limit. The total hardness was from 33.89 to 20.99 mg/l, pH was acidic to mild alkaline. The Suspended solids and total dissolved solids were within permissible limit.

Established causes of diabetes do not fully explain the present epidemic. High-level arsenic exposure has been implicated in diabetes risk, but the effect of low-level arsenic exposure in drinking water remains unclear. The researchers sought to determine whether long-term exposure to low-level arsenic in drinking water in Denmark is associated with an increased risk of diabetes using a large prospective cohort.

The objective of the study was to assess the extent of arsenic contamination of groundwater and surface water in Peru and, to evaluate the accuracy of the Arsenic Econo-Quick™ (EQ) kit for measuring water arsenic concentrations in the field.

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Exposure to disinfection by-products (DBPs) has been demonstrated to impair male reproductive health in animals, but human evidence is limited and inconsistent. The researchers examined the association between exposure to drinking-water DBPs and semen quality in a Chinese population.