Contamination, Pollution and Quality

Featured Articles
September 9, 2022 Highlights from a new report released by iFOREST
An old coal-fired power plant has been dumping vast quantities of ash out in the open for many years. (Image: Lundrim Aliu/ World Bank; CC BY-NC-ND 2.0)
September 5, 2022 In an attempt to present a perspective on how rivers are used and abused, a map of the Bengaluru rivers illustrate how waste flows through natural river corridors, polluting the rivers and altering their status.
Vrishabhavathi river flow at Thagachguppe Bridge, Kumbalgodu (Image Source: Paani.Earth)
August 27, 2022 Study looks at microplastic types in lakes of Ladakh
(Vinay Goel, Wikimedia Commons)
August 19, 2022 Better access to clean water coupled with health education to bring about changes in behaviour are critical to prevent exposure to dangerous cholera bacteria that lurk in untreated waters.
The hidden threat of cholera in India (Image Source: IWP Flickr photos)
August 11, 2022 This could lead to water quality crisis reinforcing the need for basin-specific management strategies
Around the world, more than a fifth of nitrogen released by human activity ends up in aquatic ecosystems (Image: Wikimedia Commons)
July 20, 2022 This study found a high concentration of trihalomethanes (THMs) in water treatment plants in Delhi that were associated with increased risk of cancer.
What's in your tap water (Image Source: India Water Portal)
While floods occur, states fail to enforce floodplain zoning laws
Policy matters this fortnight Posted on 15 Sep, 2022 12:26 AM

Floodplain zoning law: Only three states and one UT enacted the law to mitigate floods

Monsoon in Trivandrum. Photo for representation only (Image source: IWP Flickr Photos)
Creating jobs while managing air quality
Highlights from a new report released by iFOREST Posted on 09 Sep, 2022 02:10 PM

On the occasion of the third International Day of Clean Air for blue skies, the UN Environment Programme (UNEP), in collaboration with the Natural Resources Defense Council (NRDC) and the International Forum for Environment, Sustainability and Technology (iFOREST), hosted an event to highlight the importance of building capacity in India for air quality management.

An old coal-fired power plant has been dumping vast quantities of ash out in the open for many years. (Image: Lundrim Aliu/ World Bank; CC BY-NC-ND 2.0)
Rivers of Bengaluru: A map-infographic reflects the rivers’ state
In an attempt to present a perspective on how rivers are used and abused, a map of the Bengaluru rivers illustrate how waste flows through natural river corridors, polluting the rivers and altering their status. Posted on 05 Sep, 2022 10:59 AM

Bengaluru rivers illustrated in a simple yet spatial way

Vrishabhavathi river flow at Thagachguppe Bridge, Kumbalgodu (Image Source: Paani.Earth)
Himalayan lakes can potentially become long-term sinks of microplastics
Study looks at microplastic types in lakes of Ladakh Posted on 27 Aug, 2022 03:36 PM

Microplastic pollution is a growing environmental concern. Microplastics are plastic particles with sizes ranging from 1 μm to 5 mm. However, a clear consensus on the definition of microplastics is lacking and even the lower size limit varies among different studies.

(Vinay Goel, Wikimedia Commons)
India creates history, sets up first floating water quality testing lab in the Indian Ocean
News this fortnight Posted on 26 Aug, 2022 09:46 AM

India launches a floating wet lab for water quality tests in the Indian Ocean

View of India Ocean at the southern tip of the country (Image source: IWP Flickr photos)
Heavy metals being discharged into coastal waters
Assessing heavy metals in the coastal environment is a critical challenge Posted on 21 Aug, 2022 11:37 PM

In recent years, the impact of the wastes discharged in the Bay of Bengal has been significant due to high effluent inflow from secured sources. It was observed that the heavy metal concentrations in the Bay coast sediments were considerately high and varied among sampling points.

Heavy metal contamination causes significant harm to marine ecology and aquatic life, including humans (Image: Priyadarshi Chaudhuri)
Polluted water, hitchhiking microbes and the hidden threat of cholera in India
Better access to clean water coupled with health education to bring about changes in behaviour are critical to prevent exposure to dangerous cholera bacteria that lurk in untreated waters. Posted on 19 Aug, 2022 11:33 PM

Cholera outbreaks are frequent and steadily increasing in India, shows recent surveillance data.

The hidden threat of cholera in India (Image Source: IWP Flickr photos)
Heavy metal contamination in the sediments of the Brahmaputra river
Study indicates an intermediate silicate weathering in the adjoining area Posted on 16 Aug, 2022 10:11 AM

The river Brahmaputra carries around 73 million tons of dissolved material annually, which accounts for approximately 4% of the total dissolved flux into the oceans (Singh et al., 2005). The dissolved chemical load and sediment flux of the Brahmaputra River has significantly higher rates of physical and chemical weathering than other large Himalayan catchments.

(Image: Rita Willaert, Flickr Commons)
Arsenic removal in groundwater
Use of low-cost Biosand filters and ceramic pot filters such as JalKalp and MatiKalp developed by Sehgal Foundation are greatly effective and promising options in providing sustainable solutions for arsenic removal in the country. Posted on 12 Aug, 2022 11:14 PM

Safe drinking water, a global concern

The safety and accessibility of drinking water is a global concern. The World Health Organisation (WHO) reports that 80 percent of diseases are waterborne. Contamination from the geological formations (termed geogenic contamination) is the major source of groundwater contamination.

Arsenic contamination of groundwater, a growing probelm in India (Image Source: India Water Portal)
India’s rivers in trouble due to high fertilizer load and heavy monsoons
This could lead to water quality crisis reinforcing the need for basin-specific management strategies Posted on 11 Aug, 2022 10:59 AM

Agricultural intensification in India has increased nitrogen pollution, leading to water quality impairments. The fate of reactive nitrogen applied to the land is largely unknown, however. Long-term records of riverine nitrogen fluxes are nonexistent and drivers of variability remain unexamined, limiting the development of nitrogen management strategies.

Around the world, more than a fifth of nitrogen released by human activity ends up in aquatic ecosystems (Image: Wikimedia Commons)
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