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

  • A low-cost method to remove fluoride from drinking water with specially made teabag-like pouches has been developed by a team of Indian researchers.  This method uses pouches covered with nanoparticles synthesised from organically-grown jojoba seeds to remove fluoride from water. Jojoba is eas...
    arathiposted 1 year 9 months agoread more
  • 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 year 10 months 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 year 10 months 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 year 10 months 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 1 year 10 months 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 1 year 10 months 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 1 year 10 months 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 1 year 10 months 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 1 year 10 months 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 1 year 10 months 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 1 year 11 months 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 year 11 months 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 year 11 months 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 year 11 months 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 year 12 months 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 years 2 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 2 years 1 month 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 2 years 1 month 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 2 years 1 month 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 2 years 1 month agoread more

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A study points out that pit latrines with onsite sanitation systems are a source of groundwater contamination.

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.

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What Basubai and her children needed to fight fluorosis was access to safe drinking water.

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 that the children do not listen to her. They do not clean their teeth properly which has resulted in this condition.

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With no electricity required and no wastewater, the new purifier works even under cloudy conditions and diffused solar radiation.

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-cost solar water purifier that can address all these concerns.

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Studies reveal that efforts at guinea worm eradication have triggered the spread of hydrofluorosis in Rajasthan.

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 the state. 

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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 and have no way to earn money to make their life happy.

The TDS of drinking water in my village is 25 ppm. Can i setup bottling plant on it? If yes, what is procedure to setup botting plant ? Does our government provide us with any help in this?

Please guide me

Thanks

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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 finding some proper guidelines for the minimum distance of the plant from residence , I would really appreciate any kind of information regarding the same. Also, what kind of bacteria / germs can manifest in the surrounding region? Thank you so much!

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New systems will have a resolution of 12-km grid scale and will be based on a 20-point ensemble system that would generate a range of forecasts using slightly varying initial conditions.

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. In addition, it will be based on a 20-point ensemble system that would generate a range of forecasts using slightly varying initial conditions. 

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Chhattisgarh’s Bemetara district has been facing severe water shortage for a while now. Rainwater harvesting could be a solution to this.

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.  

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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 and increase the availability of water in private bore wells which shall decrease the load on the troubled water supply board.

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Safer water and better nutrition were key in mitigating fluorosis problem in parts of the state.

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 bhoot or evil spirit was tormenting them like hundreds of others who were becoming crippled in the village of Tapatjuri in Nagaon district in Assam. Little Farhan could barely eat, wash or take a stroll without assistance.

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