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

  • River Mutha, the pride of Pune, lovingly called 'Muthai' or 'mother Mutha', is dying a slow death, thanks to the rapidly urbanising city which is depositing huge amounts of untreated sewage and dirt in its water. The pollution of the river is consistently rising. The situation is so bad that the riv...
    aarti kelkar kh...posted 9 months 3 weeks agoread more
  • Access to freshwater is essential for all life and is a human right recognised by the United Nations. However, millions of people around the world face water scarcity, poor water quality, and inadequate sanitation. Companies operating in areas with water stress have an urgent responsibility to track...
    swatiposted 9 months 4 weeks agoread more
  • Hello, I am going to buy a water purifier, and to choose the type, I would like to know the quality of water in our area. We are staying in Santosh our, Kolkata. Pin Code-700075
    Anonymous (not verified)posted 10 months 1 week agoread more
  • Estimates suggest that about 10 million Indians are affected by fluorosis, a sickness associated with the consumption of increased concentrations of fluoride, mostly through water. Bones get weakened due to excessive accumulation of fluoride in them which results in increased hip and wrist fractures...
    Amita Bhaduriposted 10 months 1 week agoread more
  • Kerala floods take 38 lives, severe loss reported On August 9, gates of Idukki Dam, an arch dam located across the Periyar river, were opened due to incessant rainfall in the region. The opening of the dam gates has caused heavy floods in the state claiming nearly 38 lives. At least 30,000 people s...
    swatiposted 10 months 2 weeks agoread more
  • “The recent scare due to the detection of formalin-laced fish across Goa, Kerala, Assam, Manipur, Nagaland and Meghalaya points to a link between water quality and food safety. Fish traders find it cost-effective to use formalin, a carcinogen, instead of ice to prevent the decomposition of fish du...
    Amita Bhaduriposted 10 months 3 weeks agoread more
  • Yamuna river water quality improves, thanks to floodwater: Experts According to experts, the Yamuna river is at its healthiest state this year. This has been attributed to the improved water quality in the river due to a rise in the inflow of floodwaters. Increased flow in water leads to more oxyge...
    swatiposted 10 months 3 weeks agoread more
  • Hi The borewell water in our home shows a TDS of 1150. Could you recommend a solution for lowering it to less than 100. Its causing unsightly stains on the floor, walls, sinks, taps etc. Your advice would be greatly appreciated. This is for my home of 8 persons.
    Anonymous (not verified)posted 10 months 3 weeks agoread more
  • My first trek in the Himalayas was a transcendental experience. Even a decade after, I remember the intense beauty of every vignette I came across. That’s why I was excited about the Himalayan Cleanup, held on May 26 this year. More than 15,000 people participated in an attempt to spread awareness...
    arathiposted 10 months 3 weeks agoread more
  • How to establish a mineral-water-bottleling project in Erode district of Tamil Nadu, India? And inform me about the testing & treatment places nearby.
    Anonymous (not verified)posted 10 months 3 weeks agoread more
  • Groundwater is a major source of water for a large number of Indians with 66 percent rural households and 27 percent urban households directly depending on it for drinking purposes, as per Census 2011. There is a greater daily dependence on groundwater for non-potable uses. Almost 75 percent of Ind...
    Amita Bhaduriposted 11 months 2 weeks agoread more
  • Basubai is a mother of three young children—Ajay (9), Manju (11) and Sonu (13). She is married to Mukesh Singh in Jamniamota village in Bakaner block in Dhar district, Madhya Pradesh. Annoyed by the yellowing and staining of the teeth of her children, she would always complain to her husband ...
    arathiposted 11 months 2 weeks agoread more
  • The availability of potable drinking water remains a challenge in rural areas in several parts of the country. Commercially available water filters are costly, need electricity to run and reverse osmosis (RO)-based purifiers waste a lot of water. Now Indian scientists have developed a unique low-cos...
    arathiposted 11 months 2 weeks agoread more
  • Up until two decades ago, the main sources of drinking water in Rajasthan included surface water from perennial ponds, reservoirs, lakes, dams, rivers and streams with borewells and tubewells used sparingly and only in remote areas. All this changed when guinea worm infections started appearing in t...
    aarti kelkar kh...posted 12 months 3 days agoread more
  • Dear Sir, My village is situated in Uttarakhand in the Himalayan region on a hill in Chamoli district . I want to setup a bottled drinking water plant. It will be give employment to local people and everyone knows that all water comes from the Himalaya. Many young boys in our area are unemployed an...
    gerhwalposted 12 months 4 days agoread more
  • My house is under 500 m of distance from a new STP plant. At night, strong foul smell disturbs us and even the noise of the plant sometimes. We are really worried about the hazardous effects the plant could have on our body due to such prolonged exposure to the smell. As I was unsuccessful in findi...
    Anonymous (not verified)posted 1 year 1 week agoread more
  • Weather forecasts from India Meteorological Department (IMD) are all set to undergo major improvement with the commissioning of two very high-resolution weather prediction systems.  The new systems would have a resolution of 12-km grid scale, marking a big jump from the present level of 23 km....
    arathiposted 1 year 3 weeks agoread more
  • There seems to be no end to the drinking water crisis in the Bemetara district in Chhattisgarh. It is only becoming worse with every passing day. More than 40 percent of all the hand pumps installed in the district have run dry due to the depletion of groundwater level.   This situation h...
    makarandpurohitposted 1 year 1 month agoread more
  • Hello, Every time it rains, I see huge rain water gushing through the roads and drains of Bangalore city. The entire water gets wasted as it reaches the sewage and flows out of city as sewage water. If we can stock this running water across the areas, it should recharge the depleting ground water a...
    Anonymous (not verified)posted 1 year 1 month agoread more
  • Farhanuddin was just five years old when a pain in his knee began bothering him. It was 2013. Slowly, his legs began to change shape. They got so badly deformed that it began to affect his everyday life. He was gloomy and tired most times and had trouble walking. His parents thought that lengra bhoo...
    Amita Bhaduriposted 1 year 1 month agoread more

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Hello,

Please let me know if the water with below parameters suitable for construction

pH - 7.47
Total hardness as caco3 - 850 mg/ l
Total dissolved solids - 2154 mg / l
Total alkanity - 400 mg/l
Sulphates - 674 mg/l

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(Question received through email)

Dear sir/madam,

I am interested to know whether the electromagnetic water conditioners are certified by you/other bodies/institutions for use as anti-scale forming/scale-inhibiting  device/method  for routine domestic  use. Have  you conducted studies/ experiments/research to prove their effectiveness in preventing scale formation on tubes? If so, kindly share with me the relevant data you have so that I can purchase them with confidence.

I request an early and detailed reply.

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We have a borewell which giver smelly water during rainy days. Any reliable and perment solution to test the water and fix it to have a clean water.

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