Quality, Standards and Testing

Water needed for human consumption, industrial purposes or other requirements must cater to certain minimum standards. The quality of any water is defined by its physical and chemical properties (characteristics). Physical properties include its appearance (colour, clarity and odour, perhaps also its taste) while the chemical properties refer to the constituents dissolved in it. Some of the physical properties are measurable and can be expressed in units of measurement while others like appearance, odour or taste are clearly subjective. However, all the chemical constituents can be measured accurately.

Drinking water must meet certain quality standards to safeguard the health of the people. The permissible and desirable limits of various parameters in drinking water have been detailed as per the Bureau of Indian Standards (BIS) standard specifications for potable water. These parameters are included in BIS-10500-1991. The various parameters covered include colour, odour, pH, total dissolved solids, hardness, alkalinity, elemental compounds such as iron, manganese, sulphate, nitrate, chloride, fluoride, arsenic, chromium, copper, cyanide, lead, mercury, zinc and coliform bacteria. The tolerance limits for inland surface waters for various classes of water use have been published by the Central Water Commission. Per ISI-IS: 2296-1982, the tolerance limits of parameters are specified as per classified use of water depending on various uses of water ranging from Class A to Class E.

What does the water that one drinks contain, what substances are dissolved in it and what are their safe limits? What are the issues that affect water quality? For more detailed information on all this, please read our FAQs on Rules, Regulations & Standards concerning water and Equipments used to measure water quality and quantity

  • The challenges to sustain groundwater dependency in India are many where groundwater over extraction is not only leading to rapid depletion of the resource, but also giving rise to water quality issues in a situation where the response at the level of policy continues to be lukewarm. A workshop t...
    aarti kelkar kh...posted 1 day 16 hours agoread more
  • The use of reverse osmosis (RO) purifiers has become a contentious issue, mainly because of the amount of water that is wasted following its use. Last May, the National Green Tribunal (NGT) issued an order to ban RO purifiers in cases where the total dissolved solids in the water source were less th...
    aarti kelkar kh...posted 1 week 5 days agoread more
  • Groundwater pollution due to organic micropollutants is becoming a major cause of concern in many parts of the world, where water resources are on the decline. India is the largest user of groundwater and the presence of micropollutants in groundwater has been a growing concern. What do studies on m...
    aarti kelkar kh...posted 2 weeks 5 days agoread more
  • The water crisis in Karnataka has not only led to severe agrarian distress in the eastern plains region but also created an acute shortage of domestic water, in both rural and urban areas. The 21st century has seen significant changes in demography, economy and agriculture, increasing the demand for...
    aarti kelkar kh...posted 4 weeks 1 day agoread more
  • Groundwater contamination has emerged as an alarming issue in India and a recent UN report reveals that India ranks 120th among the 122 countries in terms of water quality index. As high as 70 percent of the water supply in India is contaminated, resulting in nearly 0.2 million deaths each year. Po...
    Amita Bhaduriposted 1 month 2 weeks agoread more
  • India leads the world in pollution-linked deaths: StudyAccording to a report by the Global Alliance on Health and Pollution (GAHP), India and China led in the number of deaths linked to pollution, with about 2.3 million and 1.8 million respectively, followed by Nigeria, Indonesia and Pakistan. ...
    swatiposted 1 month 3 weeks agoread more
  • Study finds, only one out of five river basins in the country can cope with climate change According to a new study by the Indian Institute of Technology – Indore (IIT-I), only one out of five river basins in the country can withstand extreme weather events and eight out of 10 vegetation types in...
    swatiposted 2 months 2 days agoread more
  • Locals say impact assessment report does not accurately represent the real impact of Luhri II hydropower project Calling the Luhri II Hydropower Project a farce, residents of Nanj village in Karsog have rejected the Social Impact Assessment (SIA) report prepared as part of the rules preceding ...
    swatiposted 2 months 1 week agoread more
  • Water, its use, availability, and impact on people has been on the public policy debate centerstage for the past several years. In India, a growing water crisis driven by climate change, inefficiency, and water pollution is slowly moving to a near-permanent state that will harm the country’s peopl...
    priyadposted 2 months 2 weeks agoread more
  • Water from a new borewell in our housing society has the composition as attached. Request for a suggestion for cost effective treatment to supply utility water for 16 families.
    Anonymous (not verified)posted 2 months 4 weeks agoread more
  • A major area of concern currently for India is the proper disposal of wastewater in urban areas. The huge increase in supply of potable water to cater to the needs of modern urban households has correspondingly increased the quantum of wastewater. The implementation of the Swacch Bharat Mission has ...
    Amita Bhaduriposted 2 months 4 weeks agoread more
  • Delhi CM announces free sewage cleaning schemes for unauthorised colonies In an effort to end sewer deaths, Delhi Chief Minister Arvind Kejriwal has announced a scheme for free cleaning of the septic tanks in unauthorised colonies in the capital. Under the new scheme, any person can make ...
    swatiposted 3 months 2 days agoread more
  • “It is a lack of (institutional) capacity which is leading to public woes on water. We are not in a position to give you quality services because of two things – one, manpower, and two, finances,” said BWSSB Chairman Tushar Girinath, speaking at a panel discussion on ‘Sustainable, Equ...
    priyadposted 3 months 2 days agoread more
  • Dear Team, I am confused about which purifier I need to use at my home. I have Aquaguard RO purifier installed in my home, currently after purification the TDS level is below 10 which is not suitable for drinking. I am planning buy gravity based filter but has doubts whether the water supplied by H...
    Anonymous (not verified)posted 3 months 6 days agoread more
  • I have a pond in Murthal, Sonipat district and my borewell water parameters shows 1530 ppm of TDS and 6.2 - pH. I want to reduce the TDS level upto 500 - 700 ppm for fish farming and pearl farming. The TDS level of water in this area has increased significantly in the past few years and I am looking...
    Anonymous (not verified)posted 3 months 2 weeks agoread more
  • A study by Toxics Link, a Delhi-based environmental research and advocacy non-profit identified 15 e-waste processing hotspots in Delhi operating with impunity without safeguards. These hotspots house over 5,000 illegal e-waste processing units directly and indirectly employing over 50,000 people. T...
    Amita Bhaduriposted 3 months 3 weeks agoread more
  • Pune continues to face a water crisis every summer despite having sufficient water, thanks to its geographical location and plentiful natural water assets. While enough of its water needs are taken care of by water supply from the Khadakwasla dam, the use of groundwater to meet the needs of the popu...
    aarti kelkar kh...posted 3 months 3 weeks agoread more
  • It’s ironic that detergents, which are meant for cleaning, flow into water bodies and pollute them with chemicals. A study released recently by Delhi-based non-profit Toxics Link, ‘Dirty Trail: Detergent to Water Bodies’, has found startling levels of the toxic chemical nonylphenol in detergen...
    Amita Bhaduriposted 4 months 2 weeks agoread more
  • The Water Future Conference in Bangalore last week, saw many from the scientific community, academia, research, civil society and the media come together to discuss the state of water resources across the world and in India, as well as future pathways and scenarios, and different technological and i...
    priyadposted 4 months 3 weeks agoread more
  • Peri urban spaces swept up in the urbanisation tangle Urban growth and expansion of cities is increasing the demand for land and water, increasing pressure on resources available not only in urban, but also in peri-urban areas. State policies often use peri-urban spaces and resources to meet the ne...
    aarti kelkar kh...posted 4 months 3 weeks agoread more

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Decentralised groundwater governance frameworks that integrate democratic institutional mechanisms are needed to deal with the current groundwater crisis in India.

The challenges to sustain groundwater dependency in India are many where groundwater over extraction is not only leading to rapid depletion of the resource, but also giving rise to water quality issues in a situation where the response at the level of policy continues to be lukewarm.

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RO purifiers can lead to huge wastage of water. A draft notification by the Environment Ministry seeks user’s views on banning RO purifiers in areas where water conforms to BIS norms.

The use of reverse osmosis (RO) purifiers has become a contentious issue, mainly because of the amount of water that is wasted following its use. Last May, the National Green Tribunal (NGT) issued an order to ban RO purifiers in cases where the total dissolved solids in the water source were less than 500 mg/litre.

Topics

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Regions

A study finds that a number of locations in the country have high concentrations of micropollutants in groundwater posing a risk to health and environment.

Groundwater pollution due to organic micropollutants is becoming a major cause of concern in many parts of the world, where water resources are on the decline. India is the largest user of groundwater and the presence of micropollutants in groundwater has been a growing concern. What do studies on micropollutants in groundwater in India show?

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Regions

The Karnataka Jnana Aayoga (KJA) set up a Task Group to draft a new water policy for Karnataka in December 2017 and the report is now in public domain. What are the suggestions that the report makes?

The water crisis in Karnataka has not only led to severe agrarian distress in the eastern plains region but also created an acute shortage of domestic water, in both rural and urban areas. The 21st century has seen significant changes in demography, economy and agriculture, increasing the demand for water in the state. Expanding irrigation and urbanisation, possibly have also had a negative impact on river basins and water conflicts are seeing a rise in the state. All these developments have substantially complicated and aggravated the water challenges in Karnataka.

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This unique low cost fluoride removal technology is not only affordable, but is also easy to operate as a water treatment filter with high efficiency suitable for rural application.

Groundwater contamination has emerged as an alarming issue in India and a recent UN report reveals that India ranks 120th among the 122 countries in terms of water quality index. As high as 70 percent of the water supply in India is contaminated, resulting in nearly 0.2 million deaths each year.

Poisoned waters: Fluoride contamination of groundwater

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News this week

India leads the world in pollution-linked deaths: Study
According to a report by the Global Alliance on Health and Pollution (GAHP), India and China led in the number of deaths linked to pollution, with about 2.3 million and 1.8 million respectively, followed by Nigeria, Indonesia and Pakistan.

Topics

Sub-Categories

Regions

News this week

Study finds, only one out of five river basins in the country can cope with climate change

Topics

Sub-Categories

Regions

News this week

Locals say impact assessment report does not accurately represent the real impact of Luhri II hydropower project

Topics

Sub-Categories

Regions

Water stewardship is an approach predicated on the concept that water is a shared resource and so water risks are also shared risks that everyone in a catchment will face

Water, its use, availability, and impact on people has been on the public policy debate centerstage for the past several years. In India, a growing water crisis driven by climate change, inefficiency, and water pollution is slowly moving to a near-permanent state that will harm the country’s people, economy and environment.  

Topics

Sub-Categories

Regions

Water from a new borewell in our housing society has the composition as attached. Request for a suggestion for cost effective treatment to supply utility water for 16 families.

Topics

Sub-Categories

Regions

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