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

  • 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 3 days 16 hours 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 weeks 19 hours 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 2 weeks 3 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 2 weeks 3 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 weeks 11 hours 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 1 month 1 day 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 1 month 1 week 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 1 month 1 week 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 2 months 21 hours 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 2 months 6 days 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 2 months 1 week agoread more
  • 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 2 months 2 weeks agoread more
  • Is the water received from Chennai Metro Water safe for consumption ? Or do we need RO purifier for it for safety?
    Anonymous (not verified)posted 2 months 3 weeks 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 3 months 2 weeks 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 3 months 2 weeks 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 3 months 2 weeks 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 3 months 4 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 4 months 17 hours 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 4 months 1 day 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 4 months 1 week agoread more

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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

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Regions

A report by NIUA brings to light the chinks in Jaipur's sewage system and suggests some solutions.

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 also led to a substantial increase in the number of toilets and this has increased the faecal sludge and the wastewater load considerably.

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Policy matters this week

Delhi CM announces free sewage cleaning schemes for unauthorised colonies

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Bangalore's water utility is understaffed, under financed and unable to service the city's water needs.

“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, Equitable Access to Water’.

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Regions

Dear Team,

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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 for a solution to counter this situation. Also need suggestion, if this water treatment affects the growth of live stocks in any way. Appreciate for the suggestions and solutions.

Topics

Sub-Categories

Regions

Study identifies 5,000 illegal e-waste units in Delhi operating without health and environmental safeguards.

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. The sheer scale of the violation of environmental norms highlights the failure of the system, especially of the E-waste (Management) Rules 2016.

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Groundwater use has doubled in Pune. Comprehensive mapping of groundwater resources and better management and governance is the need of the hour.

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 population continues to increase.

Topics

Sub-Categories

Regions

India needs to come up with a regulation on use of toxic chemicals in detergents.

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 detergents as well as in river water in India.

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The recently concluded 4 day conference in Bangalore looked at the current state of global water resource challenges & future pathways to achieve the SDGs, while ensuring equity in access to all.

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 institutional solutions to accelerate the implementation of the water SDGs and the 2030 Agenda targets, leaving no one behind.

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