Contamination, Pollution and Quality

These two maps indicate the percentage of districts affected by fluoride, in each state of the country and also gives data of the range of fluoride concentration in drinking water in each state.

For Asia, this map indicates the probability of occurrence of excessive concentrations of fluoride in groundwater, on a scale of high-medium-low.

In India, salinity has three types of genesis - one, by dissolution (areas concentrated in Kutch, North Rajasthan and bordering Punjab, South Rajasthan and bordering areas of Madhya Pradesh and parts of Western Uttar Pradesh; two, by irrigation (areas concentrated in the Deccan Peninsular region of Andhra Pradesh, Karnataka and Tamil Nadu) and parts of Orissa and West Bengal; and three, by late

The map shows that Tamil Nadu, Kerala, Karnataka, Goa, Maharashtra and Gujarat are high salinity zones, and Andhra Pradesh, Orissa and West Bengal are moderate salinity zones.

Click here to view the map - IRFC

The aim of this report is to highlight the quality problems encountered in the groundwater in the state. The chemical parameters which are present in groundwater in excess of the prescribed norms and which are considered harmful beyond permissible limits are discussed in detail.

The study collected 918 samples from 735 locations across an area of 400 square kilometers of the city and its environs. The samples were collected in March and April of 2003. Testing was done for 25 parameters. The results indicate that -

A study published in the The Internet Journal of Third World Medicine of bacteriological quality of water samples of a tertiary care medical center campus in North Western Himalayan region, more specifically in Kangra district of Himachal Prad

The Sachetana Drinking Water project of the Government of Karnataka covers 15 villages in each of the taluks of Bagepalli (Chikkaballapur), Mundargi (Gadag), Sira (Tumkur) and Pavagada (Tumkur).

The baseline survey covers a representative portion of the villages and families of the above and contains the following information:

This draft research report by the People’s Science Institute (PSI), Dehradun deals with groundwater contamination near the Union Carbide plant at Bhopal. The main objective of PSI's monitoring exercise was to assess the degree of groundwater contamination, if any, in the vicinity of the erstwhile UCIL plant particularly in the context of the huge quantum of the ill-contained toxic wastes lying unheeded inside.

This study by Carewater focuses on the large number of ‘cottage’ type  Reverse Osmosis (RO) plants that came to be marketed for supplying good and safe water to the consumers under ‘packed drinking water’ category, and a big market for which emerged in North Gujarat. For the purposes of this study, ‘fluoride-free water’ means treated water containing prescribed quantity of fluoride and not completely ‘fluoride-free’.