"Problem village" include all EXCEPT:
Where no water source in a distance of 1.6 km from community
Water is available at a depth of more than 15 metres
There is excess of Na+, iron & fluoride salt
Risk of Guinea worm infection
- A "problem village" has been defined as one where No source of safe water is available within a distance of 1.6 km, or where water is available at a depth of more than 15 metres, or where water source has excess salinity, iron, fluorides and other toxic elements, or where water is exposed to the risk of cholera.
Water