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

Featured Articles
July 8, 2022 Indian rivers are experiencing rising temperatures, which can lower the oxygen carrying capacity of their waters and spell doom for living organisms, small and large living in the waters.
The Karamana river in Thiruvanathapuram, Kerala (Image Source: India Water Portal)
June 22, 2021 Nonylphenol and its ethoxylates in drinking water: A health challenge
Water treatment facilities are incapable of removing many chemical compounds and need to be upgraded (Image: PxHere)
December 2, 2019 Water stewardship is an approach predicated on the concept that water is a shared resource and so water risks are also shared risks that everyone in a catchment will face
Picture credit: Romit Sen
November 21, 2019 A report by NIUA brings to light the chinks in Jaipur's sewage system and suggests some solutions.
Routine check done by the sewage treatment plant staff in Delawas, Jaipur. The plant is part of the ADB best practices projects list. (Image: Asian Development Bank, Flickr Commons)
Benchmarking local government performance on rural sanitation in Himachal Pradesh - A learning note by WSP
This document is about benchmarking local government performance on rural sanitation in Himachal Pradesh. Posted on 06 Jan, 2011 06:43 AM

This document deals with benchmarking local government performance on rural sanitation in Himachal Pradesh. To strengthen outcome-focused management of the rural sanitation sector in India, the Water and Sanitation Program’s (WSP) Global Scaling Up Sanitation Project, in partnership with the Government of Himachal Pradesh, developed a five-step process to monitor and benchmark performance on a monthly basis across all twelve districts in the state. Applied at the local government (district) level, this process has proven to be an effective approach, one that can improve reporting, monitoring, and performance.

Maharashtra Groundwater (Development and Management) Bill (2009)
Maharashtra ensured of sustainable and adequate supply of groundwater, maintained prescribed quality and protected public drinking water sources. Posted on 05 Jan, 2011 07:32 PM

The Maharashtra Groundwater (Development and Management) Bill, 2009 aims to facilitate and ensure sustainable and adequate supply of groundwater of prescribed quality, for various category of users, through supply and demand management measures, protecting public drinking water sources and to establish the State Groundwater Authority and District Level Authorities to manage and to regulate, with community participation, the exploitation of groundwater within the State of Maharashtra.

Guidelines for water safety plans for rural water supply systems by the Sulabh International Academy of Environmental Sanitation
Developing a village security plan for providing drinking water to rural households is now the focus. Posted on 27 Dec, 2010 07:20 PM

This document by the Sulabh International Academy of Environmental Sanitation presents the guidelines for water safety plans for rural water supply systems. The revised National Rural Drinking Water Programme (NRDWP) Guidelines 2009-2012 issued by Rajiv Gandhi National Drinking Water Mission, Department of Drinking Water and Sanitation has shifted the focus from source development and installation of water supply system for providing drinking water supply to rural household to focus on development of village security plan.

Preparation of strategic plan for rural drinking water sector in India – A draft discussion paper by the Department of Drinking Water Supply
Preparing a strategic plan for rural drinking water sector in India with technical and financial details to accelerate coverage across the rural land. Posted on 26 Dec, 2010 07:27 AM

This draft discussion paper by the Department of Drinking Water Supply (Ministry of Rural Development) deals with the preparation of strategic plan for rural drinking water sector in India. The Government of India introduced the Accelerated Rural Water Supply Programme (ARWSP) in 1972–73 to support States and UTs with financial and technical assistance to implement drinking water supply schemes in order to accelerate the pace of coverage across rural India.

Mitigating climate change through organic agriculture - Keynote address at the Third Organic Farming Association of India Convention, held at Anand, Gujarat (2010)
Green Revolution (GR) technologies, supported by official policies, and fuelled by agro-chemicals, machinery and irrigation, are well known to have improved agricultural production and productivity. Posted on 25 Dec, 2010 10:43 PM

Green Revolution (GR) technologies, supported by official policies, and fuelled by agro-chemicals, machinery and irrigation, are well known to have improved agricultural production and productivity. While these technologies greatly helped developing countries to address their food-security and food-sovereignty needs, farmers using these technologies have had to depend on external inputs.

Saving rice - Ambitious plans to increase productivity
Rice is at the heart of a fierce strategy debate as the country prepares to launch the second Green Revolution in the eastern states. Policymakers and scientists have drawn up ambitious plans to increase the productivity of this cereal which feeds two-thirds of Indians. Posted on 24 Dec, 2010 10:13 AM
Rice is at the heart of a fierce strategy debate as the country prepares to launch the second Green Revolution in the eastern states. Policymakers and scientists have drawn up ambitious plans to increase the productivity of this cereal which feeds two-thirds of Indians.

Enormous funds are being poured into research aimed at improving seed varieties, with a heavy focus on developing hybrid rice. Is it the right option for millions of small rice farmers who are already battling high input costs and increasingly unpredictable weather? Or does part of the solution lie in efficient methods of cultivation that will cut down water use and improve yield?

The economic impacts of inadequate sanitation in India: Rs. 2.4 Trillion equivalent of 6.4 per cent of GDP – A report by WSP
Inadequate sanitation causes India considerable economic losses, equivalent to 6.4 per cent of India's GDP in 2006 at Rs. 2.4 Trillion. How to manage human excreta and hygiene? Posted on 24 Dec, 2010 09:27 AM

This study report by the Water and Sanitation Programme (WSP), a global partnership administered by the World Bank suggests that inadequate sanitation causes India considerable economic losses, equivalent to 6.4 per cent of India's GDP in 2006 at Rs. 2.4 Trillion. It analyzed the evidence on the adverse economic impacts of inadequate sanitation, which include costs associated with death and disease, accessing and treating water, and losses in education, productivity, time, and tourism. The findings are based on 2006 figures, although a similar magnitude of losses is likely in later years.

The study focused on the safe management of human excreta and associated hygiene behavior. The methodology adopted by the study included disaggregating the economic impacts of inadequate sanitation into health-related impacts including premature deaths, costs of treating diseases, and productive time lost due to illnesses; domestic water-related impacts including household treatment of water, and money and time costs to obtain safe water; welfare losses including additional time spent by people for accessing toilets or open defecation sites, and girls having to miss school, and women not going to work; and the loss of potential tourism owing to inadequate sanitation.

Data on incidence (e.g. diarrheal diseases, deaths, etc.) were compiled from national sources (National Family Health Survey, WHO Demographic and Health Surveys, and other Govt. of India sources). Based on scientific literature, attribution factors were used to estimate the populations impacted by inadequate sanitation. Economic valuation was carried out using costs/prices based on secondary studies.

Access of the poor to water supply and sanitation in India - Salient concepts, issues and cases by the International Policy Centre for Inclusive Growth
This paper by the International Policy Centre for Inclusive Growth deals with access of the poor to water supply and sanitation in India. Posted on 20 Dec, 2010 10:04 PM

This paper by the International Policy Centre for Inclusive Growth deals with access of the poor to water supply and sanitation in India. It argues that economic, technical, institutional as well as social factors constrain access to safe drinking water and proper sanitation in India for both the urban and rural poor, and that coverage figures do not reflect this restricted access. It finds that, increasingly, communities are being required to manage their own water and sanitation schemes, not just in rural areas but in urban ones as well.

The paper deals with domestic water supply and sanitation and presents a historical overview of the phenomenon in rural and urban India. This is followed by a critique of available figures for coverage which, it is contended, seem exaggerated because they do not account for the several constraints to access. It addresses the specific institutional problems faced in the public sector delivery of these two utilities in India apart from dealing with the parallel yet thus far limited presence of the private sector in these twin arenas.

Mining - An increasing threat to our rivers - Article by Nitya Jacob
Mining constitutes a major, and largely unrecognized, threat to our rivers. It takes away what we have and also destroys whatever is left of it. Posted on 20 Dec, 2010 12:29 AM

Content Courtesy: Solution Exchange and Nitya Jacob
Author: Nitya Jacob

India’s arteries are choking. Her rivers, the lifeline of hundreds of millions, are over-taxed, polluted and encroached. They are being mined, dammed and emptied of water. Save for the four monsoon months, most rivers are streams of drains, depending on how many cities they pass through. This year people gaped in awe at the River Yamuna (I am sure they were over-awed by other rivers elsewhere too) as for the first time since 1978 looked like a river and not a drain.

Groundwater quality in shallow aquifers of India – A report by the Central Ground Water Board
Summarizing various aspects of Ground water quality with a special reference to six parameters - salinity, chloride, arsenic, fluoride, iron and nitrate. Posted on 14 Dec, 2010 07:54 AM

This report by the Central Ground Water Board entitled ‘Ground Water Quality in Shallow Aquifers of India’ is an outcome of the follow up of one of the important recommendations of the second meeting of the Advisory Council on Artificial Recharge to Ground Water during September 2007. It attempts to summarize various aspects of groundwater quality in the shallow aquifers in the country with special reference to six parameters viz. salinity, chloride, arsenic, fluoride, iron and nitrate.

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