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

  • Bihar floods: Fear of epidemic looms large The recent flood in the state have taken 200 lives and affected nearly 1.5 crore people across 18 Bihar districts. Although the flood water has started receding, the fear of an epidemic has increased. To tackle the situation, medical facilities are being p...
    swatiposted 1 day 1 hour agoread more
  • Govt says out of 445 river stretches, 275 are polluted The environment ministry has informed that out of the 445 rivers monitored by the Centre, 275 are polluted stretches. With 49 polluted river stretches, Maharashtra has topped the list, followed by Assam and Madhya Pradesh. The ministry, however...
    swatiposted 1 week 16 hours agoread more
  • As India completes 70 years of its independence, let’s take a moment to introspect the contribution of science and technology to national development. Several scientific and technological developments have touched the lives of common people, though limelight is often hogged by achievements in fiel...
    arathiposted 1 week 2 days agoread more
  • Hi, i am arvind Recently a borewell is dug into my house in raebareli, U.P. Borewell is about 145 feets deep and submersible pump is lowered to depth of 100 feets, after complete installation , when the pump was started it was discharging muddy water , the mechanic told us that water will get clean ...
    Anonymous (not verified)posted 2 weeks 6 hours agoread more
  • Dear Concern, We want to set up an water production unit only for 20 Ltr, Jars. Kindly advice whether BIS certification is mandatory for the Same ? If yes, kindly advice the approximate cost for the same if we want to set up the unit in Kolkata , West Bengal From a Local Newspaper we got to know tha...
    Anonymous (not verified)posted 2 weeks 6 hours agoread more
  • Hi, we are getting stench in water. This problem is only when we open the taps and shower. How do I flush and disinfect the pipeline at home? Any one who provides this service in chennai? I have taken sample from the inlet and there is no smell, it's only at the tap level. So was thinking I need to ...
    Anonymous (not verified)posted 2 weeks 8 hours agoread more
  • When Satya Devi was a child, the open well near her house in the village of Malku Majra was the water source for the household. She reminisces, “The water was clean and soft. The well would never go dry. Once when there was a drought, we went to the bed of the Sirsa river, dug a few holes in the b...
    chicuposted 2 weeks 16 hours agoread more
  • Take a walk through the maze of lanes at Seelampur in north-east Delhi, you could see small children rummaging through electronic waste that has made its way here from all over north India. They segregate end-of-life electrical and electronic products, prise them apart, put them through acid wash an...
    Amita Bhaduriposted 2 weeks 4 days agoread more
  • Decades of skating over environmental concerns have clearly cost us dear. The folly of pursuing better crop yields using chemical fertilisers in an indiscriminate manner has been surfacing lately. “Decades of agricultural abuse using fertilisers, herbicides and pesticides have taken its toll on us...
    Amita Bhaduriposted 3 weeks 1 day agoread more
  • The United Nations, in its sustainable development goals (SDGs), has earmarked 2030 as the year by which universal and equitable access to safe and affordable drinking water for all is to be achieved. To be able to do so, we would need to ensure that the 663 million people who currently drink water...
    arathiposted 4 weeks 10 hours agoread more
  • Asia has the highest number of people exposed to flooding: Report As per a new report by the Asian Development Bank (ADB) and the Potsdam Institute for Climate Impact Research (PIK), Asia has the highest number of people exposed to flooding from possible storm surge events, particularly in China, I...
    swatiposted 1 month 6 days agoread more
  • We have requested water test of sample post RO process at Home. Before RO process hardness of water is 400 PPM and after 52 PPM Below is the result of water test (only those are beyond limits are mentioned). Fluoride 1.22 mg/l (value obtained) 1 mg/l (MAX ACCEPTABLE LIMIT (AS PER IS 10500:2012) ) 1,...
    Anonymous (not verified)posted 1 month 1 week agoread more
  • The current set of government programmes such as Swachh Bharat Mission (SBM), National Rural Drinking Water Programme (NRDWP) and Atal Mission for Rejuvenation and Urban Transformation (AMRUT) have gone a long way in improving access to water and sanitation services in India. With an eye on achievin...
    arathiposted 1 month 2 weeks agoread more
  • The people of the Marathwada region have been facing severe water crisis for more than three decades. Despite adverse circumstances, the Akoladev panchayat in the Jalna district has set an example for other panchayats by solving their water woes through community participation and effective water ha...
    makarandpurohitposted 1 month 3 weeks agoread more
  • Rampura, situated in Bulandshahr district in western Uttar Pradesh, is one of the 1,200 villages on the banks of the 300-km long East Kali, a tributary of the Ganges. The river is named after goddess Kali who, according to the Hindu mythology, is fierce and fights evil by ingesting it. Till the 198...
    Amita Bhaduriposted 2 months 3 weeks agoread more
  • Audit reveals poor quality of water in UP rivers The CAG audit report for the year 2015-16 has revealed that the quality of water in major rivers and water bodies in Uttar Pradesh is not as per the government norms. The primary reason for the poor water quality is inadequate sewage and industrial e...
    swatiposted 3 months 2 days agoread more
  • E-Water Harmoniser (EWH) is a simple solution for all hard water related problems with zero water wastage and zero maintenance once installed. It has umpteen benefits for domestic, industrial as well as agricultural purposes. It does not require any salts, chemicals, magnets or electricity. It has m...
    Anonymous (not verified)posted 3 months 1 week agoread more
  • I purchased a new RO water purifier system. Bore water TDS level is 650 PPM, after RO purification water TDS level is 70 PPM and reject water TDS level is 180 PPM. My doubt is that the TDS level of reject water is less than the borewell water - is it right or wrong?
    Anonymous (not verified)posted 3 months 1 week agoread more
  • In Hyderabad, water tankers are the dominant source of daily water supply. Research for the project Ensuring Water Security in Hyderabad Municipal Area gave us some insights into the quality of water carried by these tankers. When the water is pumped from borewells in villages, it is not always tran...
    arathiposted 3 months 2 weeks agoread more
  • This is Vinay here recently have constructed my home near Bannerghatta Road in Bangalore, where in have drilled a borewell to 850 feet. The water force was so much that I couldn't drill further. Once I started using the water, I noticed it changes to brown colour and smells bad i.e. once I start the...
    Anonymous (not verified)posted 3 months 2 weeks agoread more

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Bihar floods: Fear of epidemic looms large

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Govt says out of 445 river stretches, 275 are polluted

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India has made significant contributions in the field of science and technology. It is expected to grow in the years to come.

As India completes 70 years of its independence, let’s take a moment to introspect the contribution of science and technology to national development. Several scientific and technological developments have touched the lives of common people, though limelight is often hogged by achievements in fields like space and atomic energy.

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Hi, i am arvind Recently a borewell is dug into my house in raebareli, U.P.

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Dear Concern, We want to set up an water production unit only for 20 Ltr, Jars. Kindly advice whether BIS certification is mandatory for the Same ? If yes, kindly advice the approximate cost for the same if we want to set up the unit in Kolkata , West Bengal From a Local Newspaper we got to know that BSI (https://www.bsigroup.com/en-IN/) certification can suffice our purpose for 20 ltr jars ONLY. Kindly advice whether this is an authentic source or not. Awaiting your kind response.

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Hi, we are getting stench in water. This problem is only when we open the taps and shower. How do I flush and disinfect the pipeline at home? Any one who provides this service in chennai? I have taken sample from the inlet and there is no smell, it's only at the tap level. So was thinking I need to disinfect the pipelines Any help and guidance pls. Regards Gopal

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Unless industries clean up their act and authorities take it up seriously, Baddi’s water will continue to be polluted causing hardship to its residents.

When Satya Devi was a child, the open well near her house in the village of Malku Majra was the water source for the household. She reminisces, “The water was clean and soft. The well would never go dry. Once when there was a drought, we went to the bed of the Sirsa river, dug a few holes in the bed and got clean water to drink.” Things have clearly changed for the worse. In the last decade or so, Satya has not used the water from her well. “It smells and looks bad,” she says.

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Though informal e-waste handling, segregation and import are prohibited by the law, e-waste business is thriving in the country.

Take a walk through the maze of lanes at Seelampur in north-east Delhi, you could see small children rummaging through electronic waste that has made its way here from all over north India. They segregate end-of-life electrical and electronic products, prise them apart, put them through acid wash and also burn circuit boards in the hope of extracting precious metals. From old electronics to spent batteries, they handle all items that head to the waste pile with bare hands.

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Is the soil health card scheme introduced to improve the economic condition of the farmers by bettering the health of the soil effective?

Decades of skating over environmental concerns have clearly cost us dear. The folly of pursuing better crop yields using chemical fertilisers in an indiscriminate manner has been surfacing lately. “Decades of agricultural abuse using fertilisers, herbicides and pesticides have taken its toll on us. We have been shooting ourselves in the foot by doing it,” says Raman Tyagi, director of Neer Foundation, a Meerut-based nonprofit working on water and agriculture.

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An innovation makes it possible to treat water even before it leaves a hand pump or a borewell, giving easy access to safe water in remote areas.

The United Nations, in its sustainable development goals (SDGs), has earmarked 2030 as the year by which universal and equitable access to safe and affordable drinking water for all is to be achieved.

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