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Question raised in Rajya Sabha on Drinking water affected by pollutants, 14/12/2015. As reported by the State departments dealing with rural drinking water supply into the on-line Integrated Management Information System (IMIS) of the Ministry, there are 63490 rural habitations affected with either arsenic, fluoride, iron, salinity or nitrate in one or more drinking water sources as on 9/12/2015. The State-wise number of affected habitation with fluoride, arsenic, iron, salinity or nitrate is at Annexure-I.

Question raised in Lok Sabha on Contaminated Drinking Water, 10/12/2015. The State departments dealing with rural drinking water supply have reported arsenic, fluoride, iron, salinity, nitrate and heavy/toxic elements in some parts of the country with concentrations above prescribed permissible limits in rural drinking water sources. The heavy/toxic elements being reported from the laboratories set up in the country include Manganese, Copper, Aluminum, Mercury, Uranium, Lead, Cadmium, Chromium, Selenium and Zinc.

Water quality issues are complex and dynamic in nature and need urgent attention and action. Improving efficiency of water use requires regulatory frameworks that better reflect how different water uses require different water qualities, such as water from industrial processes being reused in agriculture.

The World Health Organization estimates that > 140 million people worldwide are exposed to arsenic (As)–contaminated drinking water. As undergoes biologic methylation, which facilitates renal As elimination. In folate-deficient individuals, this process is augmented by folic acid (FA) supplementation, thereby lowering blood As (bAs). Creatinine concentrations in urine are a robust predictor of As methylation patterns.

Access to safe drinking water is essential for health. Monitoring access to drinking water focuses on water supply type at the source, but there is limited evidence on whether quality differences at the source persist in water stored in the household.

Original Source

In the present study, the geochemical characteristics of groundwater and drinking water quality has been studied. 24 groundwater samples were collected and analyzed for pH, electrical conductivity, total dissolved solids, carbonate, bicarbonate, chloride, sulphate, nitrate, calcium, magnesium, sodium, potassium and total hardness. The results were evaluated and compared with WHO and BIS water quality standards. The studied results reveal that the groundwater is fresh to brackish and moderately high to hard in nature. Na and Cl are dominant ions among cations and anions.

The present article discusses the application of a new technology using solar photovoltaic (PV) cell coupled with membrane distillation (MD) in the desalination of tap water. Salinity decreases the palatibility of water and causes long-term health issues. MD is the most promising technology to provide safe and clean drinking water to households and for other applications in small quantities. It consumes less energy than the existing commercial brackish water reverse osmosis (RO; pressure-driven) desalination technology (48%) used for the production of drinking water.

Many boreal waters are currently becoming browner with effects on biodiversity, fish production, biogeochemical processes and drinking water quality. The question arises whether and at which speed this browning will continue under future climate change. To answer the question we predicted the absorbance (a420) in 6347 lakes and streams of the boreal region under future climate change. For the prediction we modified a numerical model for a420 spatial variation which we tested on a temporal scale by simulating a420 inter-annual variation in 48 out of the 6347 Swedish waters.

Order of the National Green Tribunal (Eastern Zone Bench, Kolkata) in the matter of Subhas Datta Vs State of West Bengal and Ors. dated 07/09/2015 regarding consumption of arsenic contaminated ground water resulting in suffering from various diseases, West Bengal.

Different newspaper reports have been annexed including a recent one where it is reported that the villagers of Ghaighata of North 24 Parganas District and the people of Teghoria of Dum Dum Municipality are leaving their dwelling places due to such arsenic contamination of drinking water.

On 8 November 2013, super typhoon Haiyan made landfall in Philippines. On 24 November, the Chinese hospital ship arrived in Philippines to help with disaster relief efforts. Drinking water was collected at a variety of locations, and the concentration levels of lead were determined with field test kit. The results showed that the levels of lead in 67% of total collected water samples exceeded WHO's standard. Afterwards, the local government had taken many measures to ensure a safe water supply in next few months.