Certain areas of the South 24 Parganas district have been identified where ground water is affected by Arsenic Contamination. High levels of arsenic in ground water were found in twelve CD blocks of the district. Water samples collected from tubewells in the affected places contained arsenic above the normal level (10 micrograms per litre as specified by the World Health Organization). The affected CD blocks are Baruipur, Bhangar I, Bhangar II, Bishnupur I, Bishnupur II, Basanti, Budge Budge II, Canning I, Canning II, Sonarpur, Magrahat II and Jaynagar I.
