Fluoride and Arsenic have become a recurring theme in discussing water issues and particularly water quality issues in India. The areas affected seem to be increasing over time. There are several different aspects to the problem some of which are mentioned below:
We would like to start a user discussion on these critical topics! - India Water Portal team
Resources on India Water Portal
/search/node/fluorosis pulls up most of the resources on India Water Portal on Fluoride. Some notable content:
The Sachetana project is Karnataka is a successful government intervention to combat fluoride. Among the measures adopted is intensive household level rainwater harvesting for drinking water, where the attempt is to get all the households in the village to adopt rwh.
A downloadable multimedia training course on Flouride in English, Kannada and Telugu
A good introductory presentation: https://www.indiawaterportal.org/node/897
A map of high endemic flouride areas
For arsenic, the following links are usefuL