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

  • Sir, we live in an apartment where the recycled water and the fresh water is stored side by side. There is a wall that divides these 2 tanks. Is it safe to continue this method of storage? Is there any regulation or case law to restrict this practice?
    Anonymous (not verified)posted 3 days 12 hours agoread more
  • Which water system should I use for well water with TDS of 1200 - 1500 I mean which gbd membrane should I use my to machine For TDS level of 1300 to 1400?
    Anonymous (not verified)posted 3 weeks 6 days agoread more
  • I want to set up a greywater treatment unit at home, in this regard I want to know the characteristics of washing machine wastewater. Can someone tell the exact parameters for washing machine wastewater?
    Anonymous (not verified)posted 3 weeks 6 days agoread more
  • Seven percent of rural India has no access to clean water: World Water Day report As per WaterAid’s new report--Wild Water: State of the World’s Water 2017--63.4 million people have no access to clean water in rural India. With 67 percent of India’s population living in rural areas, this mean...
    swatiposted 1 month 18 hours agoread more
  • 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 month 5 days agoread more
  • Last year I have Purchased a Dr. Aquaguard Magnna HD RO+UV. After 1 Year when there technician come for maintenance he show me that the TDS of water is 129. He said that the, 129 TDS is very high. I have to change the cartilages. Can you please tell me what is the safe range of drinking water.
    Anonymous (not verified)posted 1 month 5 days 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 1 month 1 week 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 1 month 3 weeks 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 2 months 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 2 months 3 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 2 months 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 3 months 2 days 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 3 months 4 days 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 3 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 3 months 2 weeks 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 4 months 2 days 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 4 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 5 months 4 days 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 5 months 3 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 5 months 3 weeks agoread more

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Sir, we live in an apartment where the recycled water and the fresh water is stored side by side. There is a wall that divides these 2 tanks. Is it safe to continue this method of storage? Is there any regulation or case law to restrict this practice?

Topics

Sub-Categories

Regions

Which water system should I use for well water with TDS of 1200 - 1500 I mean which gbd membrane should I use my to machine For TDS level of 1300 to 1400?

Topics

Sub-Categories

Regions

I want to set up a greywater treatment unit at home, in this regard I want to know the characteristics of washing machine wastewater. Can someone tell the exact parameters for washing machine wastewater?

Topics

Sub-Categories

Regions

News this week

Seven percent of rural India has no access to clean water: World Water Day report

Topics

Sub-Categories

Regions

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

Last year I have Purchased a Dr. Aquaguard Magnna HD RO+UV. After 1 Year when there technician come for maintenance he show me that the TDS of water is 129. He said that the, 129 TDS is very high. I have to change the cartilages. Can you please tell me what is the safe range of drinking water.

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.

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Topics

Sub-Categories

Regions

News this week

Southern India reels under drought-like conditions

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Sub-Categories

Regions

News this week

Arsenic present in drinking water at many habitations: Centre

Topics

Sub-Categories

Regions

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

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