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

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Featured Articles
January 30, 2024 The workshop provided inputs into the newly formed committee for “Standard Operation Procedure for Quality Testing of Drinking Water Samples at Sources and Delivery Points”
Sector partners come together to supplement the efforts of the government on water quality and surveillance (Image: Barefoot Photographers of Tilonia)
October 4, 2023 वैज्ञानिकों को पहली बार बादलों में सूक्ष्म प्लास्टिक (माइक्रोप्लास्टिक) की मौजूदगी के सबूत मिले हैं। शोधकर्ताओं का भी मानना है कि इसका जलवायु और समुद्री पारिस्थितिकी तंत्र पर गंभीर प्रभाव पड़ सकता है।
बादलों में प्लास्टिक के कण
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)
Regional meeting - "Mazhapolima", Thrissur
Regional meeting to discuss the effects of the Mazhapolima program. Posted on 02 Jun, 2009 09:22 AM

Forwarded to the Portal by: Nitya Jacob, UN

Dr Kurien Baby, District Collector of Trissur, Kerala, and Solution Exchange Water Community are organizing a regional meeting to discuss the effects of the Mazhapolima program. The dates are 16-17 June 2009, and it will be held in Trissur.

Background

Kerala has among the highest well densities in India, and 71% of the population depends on them for drinking water. The aggregate household investment in the state on wells is pegged at Rs 1800 crore and they have a combined yield potential of 6.6 million cu m per day. That works out to a water availability of 197 litres of water per capita per day (lpcd), well above the government's prescribed norm of 140 lpcd. These wells are threatened. Despite an annual rainfall of 3,000 mm, 70% go dry in summer. The surface runoff is heavy, and therefore groundwater levels in several blocks have fallen sharply, and coupled with saline intrusion at an accelerated pace, have led to water quality problems.

Basin and water quality map for all major rivers of the country
Basin map for all major rivers of India by Central Ground Water Board, Central Water Commission and water quality map for all major rivers by TERI Posted on 01 Jun, 2009 04:53 PM

Watershed atlas of India from the Central Ground Water Board provides quite detailed basin maps for all major rivers of the country. To view the map by Central Ground Water Board click here

Groundwater quality of Indian states: information sheet from WaterAid and British Geological Survey
The purpose of the sheet is to provide guidance on targeting efforts on water-quality testing and to encourage further thinking on water quality issues Posted on 29 May, 2009 11:05 AM

GW quality India

JUSCO debate : Change of management of Mysore's water supply
This post is a consolidation of JUSCO debate taking place at various places, submitted by CS Sharada Prasad. Posted on 26 May, 2009 08:24 PM

History of Water Privatisation in India

Failure of the public sector to provide water to all or to regulate its use that has formed the basis for those who argue that like other resources, water too must be more efficiently utilised.

National Water Policy 2002

Private sector participation should be encouraged in planning, development and management of water resources projects may help in introducing innovative ideas, generating financial resources and introducing corporate management and improving service efficiency and accountability to users.

Where the debate actually gets polarized is whether bringing in efficiency also means bringing in the private sector? Supporters of privatisation argue private companies are better placed to increase efficiency. Critics say private companies will raise tariffs making water unaffordable.

History of Jusco

Jamshedpur Utilities and Services Company (Jusco) is a wholly-owned subsidiary of Tata Steel, the flagship company of the Tata group, formed in 2003. It is the Tata vehicle in the emerging water sector in the country having the experience of managing water service in Jamshedpur city for over nine decades. According to the JUSCO website (juscoltd.com), JUSCO has been managing the water supply of Jamshedpur for the last 102 years. In addition to Jamshedpur and Mysore, it has water supply operations in Bhopal, Gwalior, Calcutta, Haldia, Muzaffurpur and Chennai. Mysore project is the third consecutive prestigious water project it has won (in 2008) — the other two are both build and operate (BOT) projects in Salt Lake Sector-V, Kolkata and the industrial city of Haldia. These three projects coupled with Jamshedpur have enhanced Jusco's credentials as the largest water supply developer and operator in the country. According to the website jipm.or.jp of the Japan Institute of Plant Maintenance, a public corporation under Japan's Ministry of Economics, Trade & Industry, JIPM gave out Total Productive Maintenance Excellence awards in 2008 to fifty companies all over the world and JUSCO was one of the awardees. According to the website globalwaterawards.com, JUSCO was one of just 4 nominees for the 2008 Water Company of the Year global award.

Problems with existing Vani Vilas Water Works in Mysore: (Source: http://www.mygrapa.blogspot.com/)

Mysore city water supply is suffering from many serious problems. A significant portion of customers do not have meters. Most of the meters are not working properly. There is plenty of leakage all over the city. As a result of these factors, only a small fraction of the water pumped into the city gets billed. Many customers do not pay their water bills. So MCC is collecting only a fraction of the amount due to it. Due to lack of revenue, maintenance of the system is not possible. In many localities, water is supplied once in few days. When it is supplied, the pressure is low. Quality of water supplied is also poor. So poor that one can not help wondering why we are not having epidemics every day! No one knows where all the underground pipes and valves are. As a result, in many cases, one can not even localize the problem. These problems are getting worse with time. After spending Rs. 130 crores of ADB loan to provide 24x7 water supply, we are pumping twice the water into Mysore, but the water problem is increasing. Neither MCC nor the Water Board seem to have the technical expertise required to run the water supply system efficiently. MCC does not have the determination to collect its dues in the face of political pressure. Without outside intervention, the situation will soon become irreparable. It is in need of emergency treatment. The only way out seems to seek the help of competent and experienced professionals. But such help does not come cheap.

Presentation on fluoride testing kits- its puprose, technique, cost and availability
This presentation by Shashi Kad describes the fluoride testing kits Posted on 22 May, 2009 01:00 PM

This presentation describes the details of:

  • The purpose of the test
  • Technique of the field test
  • Cost and availability

Download the presentation from below:

 

Protecting groundwater for health - A World Health Organisation report
This report provides a point of entry for understanding health aspects of groundwater management Posted on 22 May, 2009 12:21 PM

This report by the World Health Organisation provides a structured approach to analysing hazards to groundwater quality, assessing the risk they may cause for a specific supply, setting priorities in addressing these

Fluoride in drinking water - World Health Organisation
Primary aim of these guidelines is the protection of public health and provide an assessment of the health risk presented by micro-organisms and chemicals present in drinking-water Posted on 22 May, 2009 12:16 PM

Fluoride is one of the very few chemicals that has been shown to cause significant effects in people through drinking-water. Fluoride has beneficial effects on teeth at low concentrations in drinking-water, but excessive exposure to fluoride in drinking-water, or in combination with exposure to fluoride from other sources, can give rise to a number of adverse effects.

Groundwater quality scenario in India by ministry of water resources
The site provides information on groundwater quality monitoring and scenario in India and also the problems of groundwater quality faced in the country Posted on 21 May, 2009 04:52 PM

This site by the Ministry of Water Resources provides details of the groundwater quality scenario and the efforts undertaken to monitor groundwater quality in India.

Fluoride testing and fluorosis mitigation in Sonabhadra district of Uttar Pradesh - A study by People's Science Institute
The study reveals high level of fluoride concentration in both groundwater and surface water sources of most of the villages in the district Posted on 21 May, 2009 11:20 AM

This paper presents the findings of a study  conducted by Peoples’

Guidelines for drinking water quality - World Health Organisation (2008)
World Health Organisation provide the guidelines for drinking water quality to protect public health. These guidelines vary among countries and regions Posted on 21 May, 2009 11:14 AM

This document published by the World Health Organisation is divided into the following chapters:

1: Introduction
2: The Guidelines: a framework for safe drinking-water
3. Health-based targets

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