Water Quality

Judgment of the National Green Tribunal regarding plywood factories operating in Yamuna Nagar, Haryana, 27/05/2025

Judgment of the National Green Tribunal, May 27, 2025 in the matter of Sumit Saini Vs Shree Ram Steel Industries & Others. Sumit Saini, resident of village Damla, District Yamuna Nagar, Haryana had sent a letter petition dated May 14, 2022 to the NGT. The application said that around 25 …

Lesson from school students

The figure shows the elements of a small-scale wastewater treatment system in use at Stensund high school in Sweden. First, a sedimentation tank stores the wastewater produced over two days (1). The water then is led to a soil filtration tank (2) with sulphuric bacteria under anaerobic (non-oxygen) conditions, which …

Who needs high tech water treatment plants?

TRADITIONAL communities developed ingenious ways of making use of wastewater. And, experts involved in the modern science of ecological engineering can learn a great deal from them. There is a growing realisation that the term "wastewater" is a sign of human inability to recognise a valuable resource. Traditional societies throughout …

Purifying the Ganga

IT may have been this emotive encomium to the Ganga that motivated Nehru"s grandson, Rajiv Gandhi, to undertake India"s most ambitious environmental clean-up programme ever. Launching the Ganga Action Plan (GAP) in Varanasi on June 14, 1986, Gandhi, then prime minister, of India, stated confidently, "We shall see that the …

Ganga officials turn to turtle

ONE OF the more innovative ideas that the Ganga Project Directorate (GPD) is pursuing is to revive the use of turtles to keep the river clean. Traditionally, turtles and crocodiles acted as scavengers consuming the corpses and other debris in the water, The once-plentiful soft-shelled turtle (Triunyx gangiticus) is on …

Of legal battles and individual initiative

BEFORE the multi-crare GAP was off the blocks, Supreme Court advocate MC Mehta had approached the apex court to slop the appalling pollution of the Ganga by the municipalities and industries along its banks. Mehta first requested the Supreme Court on April 29, 1985, to direct can. carried industries to …

The jauradice epidemic in Kanapur

"LAST YEAR's jaundice epidemic in Kanpur highlights the fundamental problems that plague any attempt to clean the Gangs," says social activist Raghunath Singh, commenting on the official tally of 1,200 dead in the 1991 jaundice epidemic, although the actual number is held to be much higher. Kanpur municipal officials deny …

Water quality criteria

WATER QUALITY CRITERIA Water class Criteria A Drinking water without treatment: Faecal coliforms: 50 MPN / 100 ml (max); DO: 5 mg/1 (min); BOD: 2mg/l (max) B Bathing: Faecal coliforms: 500 MPN / 100 ml (max);DO: 5 mg /l (max) C Drinking water with treatment: Faecal coliforms: 5000 MPN / …

Cleaner and costlier

THE BRITISH public is faced with a grim choice: clean versus cheap water. In a recently released document, The Cost of Quality, Ian Byatt, director general of water services, predicted the cost of water in Britain would double by 2005. He questioned the stringent standards for drinking and bathing water …

Water shortage in the home of glaciers

THE RICH out of greed and the poor out of need have damaged the fragile ecology of the Himalayan region so extensively the eight districts in the Kumaon and Garhwal region are gripped by a water shortage and law and order is gravely endangered, with village pitted against village and …

Ultraviolet disinfectant

AN ADVANCED, ultraviolet (UV) light-water disinfection system has been installed at a water pumping station in UK. The system, developed by Hanovia Ltd, differs from earlier systems in that it can automatically regulate UV intensity in response to changes in water quality and water flow. UV disinfection has normally been …

Heavy metal abundances in the Kandy lake—An environmental case study from Sri Lanka

The Kandy lake, situated in the heart of Sri Lanka's second largest city with a population of nearly 120,000, has been monitored to probe the extent of heavy metal pollution. Although the lake is a source of drinking water to the city, a large number of effluent canals drain into …

Chemistry of two freshwater lakes of Hyderabad, India-silicates

Two drinking water lakes of Hyderabad - Osman Sagar and Mir Alam, were studied for their chemistry for two years (1977-78). Mir Alam, the older of the two, showed higher silicate content. Dissolved component formed 91-27% of the total silicate content in these lakes. Osman Sagar showed higher percentage of …

Heavy metal pollution of the mid-canal of Kandy: an environmental case study from Sri Lanka

The mid-canal of Kandy, a 8-km effluent canal that runs through the city, collects massive quantities of domestic, municipal, and agricultural waste products. In this study, 37 samples from canal water and 13 from nearby drinking water wells were analyzed for their total Pb, Cd, V, Fe, and ferrous ion …

Environmental Health Disasters - Risk Analysis and Planning, 24-25 September 2014, New Delhi

Disasters whether natural or technological, pose risks to public health. The key environmental health issues and challenges include food safety, water quality, wastewater disposal, shelter assessment/sanitation, vector control/pest management, responder safety, building assessment and management of municipal solid waste and hazardous waste materials. Good environmental health disaster management has a …

2nd International Interdisciplinary Conference on Land use and Water Quality Agricultural Production and the Environment 21-24 September 2015, Austria

LuWQ2015 is an international and interdisciplinary conference on the cutting edge of science, management and policy to minimise effects of agriculture and land use changes on the quality of groundwater and surface waters.

International Interdisciplinary Conference on land use and water quality Agricultural Production and the Environment 21-24 September 2015, Austria

LuWQ2015 is an international and interdisciplinary conference on the cutting edge of science, management and policy to minimise effects of agriculture and land use changes on the quality of groundwater and surface waters.

International Conference on Water Resources Assessment and Seasonal Prediction in Koblenz 13-16 October 2015, Germany

Changes in water availability and quality are occurring mainly as consequences of global and local changes including environmental factors, climate change and human-induced changes. Science-based knowledge to assess water resources over a range of scales in space and time is essential to develop methodologies for water resources assessments to improve …

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