/topics/geogenic-contamination
Geogenic Contamination
Guidelines for water safety plans for rural water supply systems - A document by SIAES and WHO India (2009)
Posted on 20 Apr, 2011 01:10 AMDelivery of safe drinking water is vital for protecting public health and of promoting more secure livelihoods.
The traditional approach to water quality and safety management has relied on the testing of drinking water, as it leaves the treatment works or at selected points, either within the distribution system or at consumer taps. It is referred to as ‘end‐product testing’.
Arsenic and chromium hyper-accumulation by an ecotype of Pteris vittata - Possibility of remediation of contaminated water and soil – A paper in Current Science
Posted on 14 Apr, 2011 08:04 PMThis study by National Environmental Engineering Research Institute published in Current Science was carried out to identify Pteris vitta and test its hyper-accumulating properties. The plant is commonly known as the Ladder brake fern or Chinese brake fern plant in India, and had been reported elsewhere as an arsenic hyper-accumulator.
.The remediation of arsenic and chromium contaminated soil and water has become an important environmental issue. It is in this context that the discovery of hyper-accumulator plant species, which have the unusual ability of accumulating metals such as arsenic (As), chromium (Cr), zinc (Zn), nickel (Ni) and copper (Cu) to very high concentrations, has further boosted technologies based on this property.
This is the first report of characterization of arsenic accumulation in an Indian ecotype (plant), which also shows chromium hyperaccumulation in addition to arsenic. Intact plantlets were grown in 20 per cent Hoagland solution amended with up to 200 mg arsenic or chromium medium. Plants absorbed and accumulated a significant amount of arsenic and chromium in their biomass with high bio-enrichment factor. Arsenic and chromium tolerance by spores and gametophytes under in-vitro was also assessed.
Workshop on Bhuvan: Gateway to Indian Earth Observation visualization – Indian Space Research Organisation (ISRO), 26th March, 2011, Pune
Posted on 21 Mar, 2011 01:49 PMOrganizers:
- Indian Space Research Organisation (ISRO)
- Pune University
Venue: Pune University, Pune
High fluoride incidence in groundwater and its potential health effects in parts of Raigarh district of Chhattisgarh – A paper in Current Science
Posted on 21 Mar, 2011 06:45 AMFluoride (F) is harmful to human health and knowledge of spatiotemporal distribution of F content in groundwater is thus a prerequisite for taking preventive measures.
Vicious cycle of fluoride in semi-arid India – A health concern – A paper in Current Science
Posted on 20 Mar, 2011 09:10 PMMore than 16 states in India are facing the fluorosis problem. Several southern-peninsular states are experiencing monsoon climate condition, where the rainwater is harvested through tanks and used for agriculture.
Posters on the factors responsible for excess fluoride and fluorosis by MASS Education
Posted on 01 Feb, 2011 12:01 PM
Click on the below posters to know more
Assessment of fluoride in drinking water in Andhra Pradesh - A report by Arghyam
Posted on 31 Jan, 2011 12:11 AM
High amounts of fluoride (>1.5 ppm) in drinking water is a serious issue in many parts of India. Fluorosis has been a serious issue in Andhra Pradesh, as early as 1999 with maximum reported levels at 29 ppm. Evidence indicates that 70-100% of the state is affected.
Booklets on water quality, river pollution and rainwater harvesting by Janhit Foundation
Posted on 18 Jan, 2011 04:16 PMThe three booklets discuss the issues of water quality, river pollution, and rainwater harvesting, in detail.
Mitigation and remedy of groundwater arsenic menace in India: A vision document by NIH and CGWB (2010)
Posted on 10 Dec, 2010 11:52 PMThis document, an outcome of the joint efforts of NIH and CGWB gives a detailed outline emphasizing the gaps, focal areas of research, immediate measures to be taken up to provide arsenic safe potable water to the people in the arsenic vulnerable areas, other activities to be initiated for attaining a logical conclusion of the arsenic problem and also to develop a roadmap delineating as to how the suggested activities could be initiated, coordinated, undertaken, including framing out a budget estimate to fulfill those activities.
Fluorosis water contamination in rural India - A video by Earth Report
Posted on 26 Nov, 2010 12:08 PMVideo Courtesy: EarthReport
Source: 5min Media
It has been proved that it's a direct result of drinking ground water that's contaminated with high levels of fluoride. This video suggests that rainwater is the best source of water for communities living in these regions.