of the fifty-seven samples, twenty-four (42%) had fluoride concentrations
that were higher than the stipulated marginal level (prescribed
by the WHO) of 1.5 ppm, fifteen (26%) samples had fluoride concentrations
of exactly 1.5 ppm, and thirty-nine (68%)
had crossed the safe level of 1 ppm. The samples were again tested
in the departmental laboratories at Anantapur and Kurnool and the
results were almost identical.
In Chitlamkunta, 65% (11 out of 17 DW) of the
drinking water sources had fluoride in excess of the safe level
and this included water sources that had fully laid out distribution
systems. A social map of the village showing the locations of fluoride-affected
water sources (hand pumps and sources of RWS) was presented before
the village gram sabha. The reasons for the increase in fluoride
concentrations and the adverse impact
of drinking water from these sources was also explained in detail
through graphs, maps and photographs.