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

  • This story is of Punawli Kalan village in Uttar Pradesh, where a community with the support of a women-led federation, solved its water woes by developing a community-owned water supply system. Punawli Kalan village is situated in Jhansi district, in the drought-prone Bundelkhand region of Central ...
    priyadposted 1 day 9 hours agoread more
  • Water pollution is a serious problem in India with 70 percent of its surface and groundwater resources contaminated by biological, toxic, organic, and inorganic pollutants. As a result, the socio-economic cost of poor water quality is high. Around 1.5 million children under five years die each year ...
    aarti kelkar kh...posted 3 days 13 hours agoread more
  • Southern India reels under drought-like conditions All the southern states, except Telangana, are facing drought-like conditions. Tamil Nadu is the worst hit with 80 percent deficit in water storage in the state’s reservoirs, followed by Andhra Pradesh, Karnataka and Kerala. The collective water ...
    swatiposted 2 weeks 1 day agoread more
  • Arsenic present in drinking water at many habitations: Centre The Ministry of Drinking Water and Sanitation has informed the Rajya Sabha that drinking water in 66,663 habitations across the country is affected by arsenic and fluoride contamination. However, the government is working to provide...
    swatiposted 1 month 1 week agoread more
  • In the last few decades, India has seen an increasing number of people migrating from rural areas to urban cities in search of work and better living. These migrants often get employed in the informal sector as construction workers, vendors, domestic servants, etc. They also live in informal settlem...
    makarandpurohitposted 1 month 2 weeks agoread more
  • People of Sikkim stand against Teesta hydel project The proposed 520 MW Teesta Stage IV hydropower project in Sikkim is being opposed by the indigenous Lepchas, a local community in the state that worships mountains and rivers. The project that has been proposed by the National Hydro Power Corporat...
    swatiposted 1 month 3 weeks agoread more
  • Wetlands are one of the most productive ecosystems and play a crucial role in everything from water conservation, flood regulation and groundwater recharge to micro-climate regulation, providing safe habitat to biota, and more. As per the National Wetland Atlas 2011 report, the millennium ecosystem...
    makarandpurohitposted 1 month 3 weeks agoread more
  • Can I use reverse osmosis reject water in media filters back wash? where TDS of reject I have is 1200 ppm.
    Anonymous (not verified)posted 1 month 4 weeks agoread more
  • At a time when the government’s attention is steered towards the concerns of the northern rivers like the Ganga and the Yamuna, it is seldom that the polluted rivers of the south India come up for discussion. The Central Pollution Control Board (CPCB) had in its 2015 report noted that around 37,00...
    Amita Bhaduriposted 2 months 1 week agoread more
  • With a total population of 1200, Sonnahallipura village in Hoskote taluk of Bangalore rural district has 250 homes. This village was chosen by the Rotary Club of Bangalore, Indiranagar to start a micro-credit programme for 10 women’s self-help groups (SHG) and a low-cost sanitary napkin manufactur...
    priyadposted 2 months 1 week agoread more
  • We have analysed our bore water and give below the details for reference, comments and suggestion. Physical properties: appearance when analysed - turbid. After filtration - clear. PH value at 25 C - 6.95. Colour - Yellowish. odour - Agreeabe . turbidity - 21.0. Electrical conductivity - 5840 microm...
    Anonymous (not verified)posted 2 months 3 weeks agoread more
  • What is the source that increases COD, TSS and alkalinity of Sewage water in a Hospital? My hospital consists of Laboratory, CSSD, Operation Theatre, Pharmacy, kitchen, etc. Also how can these parameters be kept under control
    Anonymous (not verified)posted 3 months 2 weeks agoread more
  • After the Bharatiya Janata Party (BJP) came to power with Narendra Modi as the prime minister of the country on May 26, 2014, the new government initiated several key programmes with the protection of the environment in mind. One of the major programmes that gained momentum instantly was the Ganga r...
    swatiposted 3 months 4 weeks agoread more
  • All 14 districts in Kerala have been declared drought-hitAfter witnessing a 34 percent deficit in rainfall during the south-west monsoon, the Kerala government has declared all its 14 districts drought-hit. The districts are facing severe water scarcity; the worst affected ones are Wayanad, Thrissur...
    swatiposted 4 months 2 weeks agoread more
  • More fund over the budgetary allocation sought for MGNREGADespite the highest ever budgetary allocation this year to the Mahatma Gandhi National Rural Employment Guarantee Act (MNREGA), the scheme is facing a shortage of funds as the demand for work is higher this year due to droughts in s...
    swatiposted 4 months 2 weeks agoread more
  • Hi, First, I would like to congratulate your organization for the stupendous work and effort that was put into building such a huge informative portal. I am an IT employee working in Hyderabad. I am working on a case study and needed some information. I would be grateful if at least...
    sabitakaushalposted 4 months 3 weeks agoread more
  • Hi, We are an apartment of 8  flats in Kaggadaspura, Bangalore (Near a contaminated Lake). We use borewell water for non-drinking purposes, and we have noticed that sometimes water comes out black in colour dissolved with black sediments, from the bathroom and kitchen pipes.  Home Applian...
    Sreejithposted 4 months 4 weeks agoread more
  • Jail term for selling packaged water above MRP: Government Consumer affairs minister, Ram Vilas Paswan has ordered to impose a penalty and jail term on those who sell bottled water above the maximum retail price (MRP). The order is in line with the section 36 of Legal Metrology Act, that clearly or...
    swatiposted 5 months 6 days agoread more
  • The Thiess International Riverprize is a globally renowned prize that is awarded by the International RiverFoundation to those demonstrating outstanding results in the sustainable river basin management, restoration and protection across the world. This year, apart from the global recognition as a l...
    swatiposted 5 months 1 week agoread more
  • A severe crisis is plaguing the rivers in India. A study by the Central Pollution Control Board (CPCB) in 2013 has found that the number of contaminated rivers in the country has more than doubled over the past five years. This is mainly due to the deposition of untreated sewage and industrial efflu...
    aarti kelkar kh...posted 5 months 1 week agoread more

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A women led initiative ensures access to water in Punawli Kalan village of Jhansi

This story is of Punawli Kalan village in Uttar Pradesh, where a community with the support of a women-led federation, solved its water woes by developing a community-owned water supply system.

Topics

Sub-Categories

Regions

A study finds poor water quality behind high incidence of waterborne diseases among households in Ludhiana. The poor suffer the most from it.

Water pollution is a serious problem in India with 70 percent of its surface and groundwater resources contaminated by biological, toxic, organic, and inorganic pollutants. As a result, the socio-economic cost of poor water quality is high.

Attachments

Topics

Sub-Categories

Regions

News this week

Southern India reels under drought-like conditions

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Regions

News this week

Arsenic present in drinking water at many habitations: Centre

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The sorry state of urban slums are testimony to poorly implemented policies for the rehabilitation of migrants.

In the last few decades, India has seen an increasing number of people migrating from rural areas to urban cities in search of work and better living. These migrants often get employed in the informal sector as construction workers, vendors, domestic servants, etc. They also live in informal settlements, generally known as slums.

Topics

Sub-Categories

Regions

News this week

People of Sikkim stand against Teesta hydel project

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We are losing our wetlands fast. Taking the case of Madhya Pradesh and its wetlands as an example, environment expert K.G. Vyas explains how the wetlands can be saved from further deterioration.

Wetlands are one of the most productive ecosystems and play a crucial role in everything from water conservation, flood regulation and groundwater recharge to micro-climate regulation, providing safe habitat to biota, and more.

Topics

Sub-Categories

Regions

Can I use reverse osmosis reject water in media filters back wash? where TDS of reject I have is 1200 ppm.

Topics

Sub-Categories

Regions

Rivers turn muck in many stretches in south India calling for action before they dry up completely.

At a time when the government’s attention is steered towards the concerns of the northern rivers like the Ganga and the Yamuna, it is seldom that the polluted rivers of the south India come up for discussion. The Central Pollution Control Board (CPCB) had in its 2015 report noted that around 37,000 million litres per day (MLD) of untreated sewage water flows into the rivers across the country.

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A village near Bengaluru sets an example of wastewater use by innovatively using the reject water from a community RO plant installed to eliminate fluoride contamination.

With a total population of 1200, Sonnahallipura village in Hoskote taluk of Bangalore rural district has 250 homes. This village was chosen by the Rotary Club of Bangalore, Indiranagar to start a micro-credit programme for 10 women’s self-help groups (SHG) and a low-cost sanitary napkin manufacturing unit.  

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