Abstract
Representative sampling of rainwater has been carried out in Greater Bombay and its neighbourhood during the SW monsoon period of 1974. It is estimated that on the average ?200 kg ha?1 sea salt is deposited here, each monsoon. A high ‘excess’ of Ca is observed throughout Bombay, including relatively unpolluted places. The source of this excess is seen to be non-marine. The mean pH, ionic balance and salinity of rainwater has been used to characterise different areas of Bombay in varying degrees of pollution. DOI: 10.1111/j.2153-3490.1976.tb00676.x