Contamination, Pollution and Quality

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Featured Articles
September 5, 2024 The current state of play regarding sewage treatment standards in India
Clogged pipes: India's sewage treatment crisis (Image: Trey Ratcliff, Flickr Commons; CC BY-NC-SA 2.0)
September 2, 2024 Recommendations made by an expert committee, the NGT's subsequent orders, and a critical analysis of these developments
Drum screens at Bharwara sewage treatment plant (Image: India Water Portal)
August 30, 2024 This article traces the evolution of the legislative framework for water pollution in India and its implications for wastewater treatment standards in the country. 
Open drains in Alwar (Image Source: IWP Flickr photos)
August 22, 2024 The journey of sewage treatment standards and the challenge of treating India’s growing wastewater
Need to fix wastewater effluent standards (Image: Kristian Bjornard)
August 1, 2024 Recognising the limitations of relying solely on herbicides, a strategic shift towards preventive measures is crucial
Relying solely on chemicals to keep weeds at bay isn't sustainable and can harm the environment. (Image: Needpix)
June 12, 2024 Leveraging research to optimise water programs for improved health outcomes in India
Closing the tap on disease (Image: Marlon Felippe; CC BY-SA 4.0, Wikimedia Commons)
Groundwater policy affects stubble burning in the north west
Shifting from monoculture to diversified crop pattern a solution to stubble burning Posted on 29 Oct, 2022 11:20 AM

An estimated 620 million tons of crop residue is generated annually in India, of which 16% is burnt in field. The major contribution in stubble burning is paddy straw (43%), wheat straw (21%) followed by sugarcane (19%).

Burning of rice residues in south east Punjab, prior to the wheat season(Image: CIAT/NeilPalmer via Flickr Commons)
Workshop: Biosand Water Filter (JalKalp) Technology
Posted on 13 Oct, 2022 06:49 PM

About the workshop

Workshop to build capacities on the biosand filter (Image source: Sehgal Foundation)
Pyrolysis-based decentralized biorefinery can reduce residue open burning
Biochar use as carbon sink or coal substitute determines the environmental impacts, as per the study Posted on 13 Oct, 2022 12:19 PM

Crop residues are an abundantly available lignocellulosic feedstock that can provide multiple value-added products in a biorefinery (Kamm, 2007). However, approximately 24% of the generated residue is burned in the fields in India (Ravindra et al., 2019). 

It was environmentally beneficial to treat biomass locally rather than in a centralized unit. (Image: Zack Dowell)
India's plastic ban fails to curb plastic pollution
News this fortnight Posted on 09 Oct, 2022 07:49 PM

Experts call India’s single use plastic ban weak, argue that it targets the most vulnerable

Plastic menace in Kufri, Himachal Pradesh (Image source: IWP Flickr photos)
While floods occur, states fail to enforce floodplain zoning laws
Policy matters this fortnight Posted on 15 Sep, 2022 12:39 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 02:38 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 12:56 PM

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 10:12 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 22 Aug, 2022 12:26 AM

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)
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