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

  • Choked by sewage and effluent discharge, lakes in and around Indore are in a terrible state and in need of restoration. A bustling city in central India, Indore was declared the cleanest city in India three years in a row. After cleaning the streets and its garbage landfill area, it has now turned i...
    Amita Bhaduriposted 1 week 4 days agoread more
  • Hello, My three year old borewell with 450 depth is now getting black and yellow colour, smelly water. Kindly guide me how we can fix this? I have no other source for water. Will bore cleaning help? Pls guide me (the neighbouring house 500 meter away from me is selling water but they never faced th...
    Anonymous (not verified)posted 1 month 1 week agoread more
  • Floods are an annual phenomenon in Assam. They are as integral to the state as the Brahmaputra River is, and each monsoon, we are reminded that Assam exists (or is drowning). As I write this piece, Assam is slowly recovering from the first wave of flood this monsoon. For several weeks, the entire st...
    priyadposted 1 month 1 week agoread more
  • I get water supply from municipal corporation in Ludhiana which is untreated groundwater. The TDS is 275. I use a purifier that has sediment, carbon, RO, UV and UF filter. I want to remove RO filter because the TDS after purification is about 35 and the water becomes acidic. I think TDS of 275 doesn...
    Anonymous (not verified)posted 1 month 1 week agoread more
  •  The East Kolkata Wetlands (EKW) are a truly unique ecosystem, presenting a very different sight from the normal urban landscape in India. What is so unique and different about them, and how have they survived the aggressive growth of Kolkata city? The credit goes to Dr. Dhrubajyoti Ghosh, a...
    aarti kelkar kh...posted 1 month 2 weeks agoread more
  • Alia, 15, cannot move or talk. “She is totally dependent on me,” said her father Mohammad Asad, an electrician. “Her mother passed away almost nine years back. I have to remain with her most of the time”. Even 35 years after the world’s worst industrial disaster that claimed 3787 lives in...
    priyadposted 1 month 3 weeks agoread more
  • Centre for Science and Environment (CSE), a New Delhi based non-profit has rated the country’s fertilizer sector on several parameters, in a first of its kind study. The rating, done over an 18-month-long process, covered 28 of the 32 functional fertilizer units in the country. The findings of thi...
    Amita Bhaduriposted 1 month 3 weeks agoread more
  • Himalayan states demand green bonus and separate ministry from Centre At the recent Conclave of Himalayan States, a separate ministry was demanded to deal with problems endemic to the mountain states, as well as a green bonus in recognition of their contribution to environmental conservation. ...
    swatiposted 1 month 3 weeks agoread more
  • This summer I had the incredible opportunity, to work with the Tata Trusts and their Tata Water Mission (TWM) initiative, exploring avenues to provide scalable water access to stakeholders in rural communities. TWM is one of the Trusts’ flagship initiatives in India, at the forefront of ensuring...
    priyadposted 2 months 3 days agoread more
  • Offline iron remover installed for borewell water. After one year, black water comes often. When we cleaned the tank, we found sandy coal like black substance. Could it be due to the wear out of the iron remover or contaminated water.
    Anonymous (not verified)posted 2 months 6 days agoread more
  • A Future Earth Conference Opening new frontiers in water system diagnostics and innovative solutions to mitigate the 21st-century global water crisis The Sustainable Water Future Programme (Water Future) of Future Earth is organizing its first international conference in partnership with Divecha C...
    priyadposted 2 months 1 week agoread more
  • Chikkaballapur is a district in the state of Karnataka, just north of the capital Bengaluru. A peri-urban area that was once an agricultural centre for this region, today Chikkaballapur is facing a unique problem.  Decreasing rainfall has meant increasing periods of drought for this area, wh...
    priyadposted 2 months 2 weeks agoread more
  • Prime Minister Modi pitches for a collective effort to overcome water crisis in the country Taking note of the looming water crisis in the country, Prime Minister Narendra Modi has made three requests to the nation during his Mann Ki Baat radio address this past Sunday. He urged all Indians to crea...
    swatiposted 2 months 3 weeks agoread more
  • Hello, I stay at a housing at Doltala, Madhyamgram. There are white deposits on utensils, bottles and the washroom walls and floor and on the taps.Despite regular cleaning the deposits are difficult to remove and develop into scaly deposit with time. The filter that I use, too has deposits. I am no...
    Anonymous (not verified)posted 2 months 4 weeks agoread more
  • Hi, Have got a borewell at my house, but it has very hard water. Can using a softener make it portable or does it require softener & RO. Any other suggestions would be great. Attached a copy of water test report. Thankyou
    Anonymous (not verified)posted 3 months 1 week agoread more
  • Hello, My borewell water contains 1 mg/l of iron. IS456:2000 explains that iron presence is not suitable for construction purposes. I don't have any alternative may I use it? If I use it what effectit will have on the concrete. Or else, I use it for curing only ?
    Anonymous (not verified)posted 3 months 1 week agoread more
  • The threat of desertification increases in 26 of 29 states As per the State of India's Environment (SoE) 2019 in Figures, between 2003-05 and 2011-13, India has witnessed an increase in the level of desertification in 26 of 29 states. More than 80 percent of the country's degraded land lies in just...
    swatiposted 3 months 1 week agoread more
  • THE ORGANIZATION Splash is an international charitable organization headquartered in Seattle, WA, founded in 2007. Our mission is simple: “We clean water for kids.” Small, young and growing, Splash is in a unique position to be groundbreaking in the global health and WASH sectors, able to try n...
    priyadposted 3 months 2 weeks agoread more
  • Can STP water after aeration and filtration be used for groundwater recharging?
    Anonymous (not verified)posted 3 months 3 weeks agoread more
  • Jal Shakti ministry formed by merging water ministry and drinking water ministry The government has launched the new Jal Shakti ministry by merging the Ministry of Water Resources, River Development and Ganga Rejuvenation and Ministry of Drinking Water and Sanitation. Gajendra Singh Shekhawat has b...
    swatiposted 3 months 3 weeks agoread more

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Floating 'islands' give new lease of life to a lake in Indore

Choked by sewage and effluent discharge, lakes in and around Indore are in a terrible state and in need of restoration. A bustling city in central India, Indore was declared the cleanest city in India three years in a row. After cleaning the streets and its garbage landfill area, it has now turned its attention towards cleaning as well as restoring its lakes and ponds.

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Hello,

My three year old borewell with 450 depth is now getting black and yellow colour, smelly water. Kindly guide me how we can fix this? I have no other source for water. Will bore cleaning help? Pls guide me (the neighbouring house 500 meter away from me is selling water but they never faced this kind of issue)

Thanks & regards

Vinod KS
Hebbal Bangalore
Phone: 9249511160

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Mitul Baruah from Ashoka University narrates personal experiences of people affected by floods in Majuli, Assam.

Floods are an annual phenomenon in Assam. They are as integral to the state as the Brahmaputra River is, and each monsoon, we are reminded that Assam exists (or is drowning). As I write this piece, Assam is slowly recovering from the first wave of flood this monsoon.

Topics

Sub-Categories

Regions

I get water supply from municipal corporation in Ludhiana which is untreated groundwater. The TDS is 275. I use a purifier that has sediment, carbon, RO, UV and UF filter. I want to remove RO filter because the TDS after purification is about 35 and the water becomes acidic. I think TDS of 275 doesn't require RO filter, but I'm concerned about Arsenic and Uranium in water supply. Although I haven't got it tested. Should I remove RO or leave it there?

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A real estate boom is tightening its grip on the East Kolkata Wetlands, a unique waste processing ecosystem. Cooperation and coproduction, not conflict are needed to save them.

 The East Kolkata Wetlands (EKW) are a truly unique ecosystem, presenting a very different sight from the normal urban landscape in India.

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Bhopal Gas Leak: Long Term Impact

Alia, 15, cannot move or talk. “She is totally dependent on me,” said her father Mohammad Asad, an electrician. “Her mother passed away almost nine years back. I have to remain with her most of the time”.

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A recent report by CSE rates fertilizer plants on how green the sector is.

Centre for Science and Environment (CSE), a New Delhi based non-profit has rated the country’s fertilizer sector on several parameters, in a first of its kind study. The rating, done over an 18-month-long process, covered 28 of the 32 functional fertilizer units in the country. The findings of this green rating project were shared during the release of this rating report on 29th July, 2019 in New Delhi.

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News this week

Himalayan states demand green bonus and separate ministry from Centre

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A young college graduate shares his experience working with Tata Trusts in Assam on water issues.

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Offline iron remover installed for borewell water. After one year, black water comes often. When we cleaned the tank, we found sandy coal like black substance. Could it be due to the wear out of the iron remover or contaminated water.

Topics

Sub-Categories

Regions

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