The drive was launched last month after civic chief Ajoy Mehta took a review of health measures taken by the BMC ahead of the monsoon season.
"Outbreak of diseases like gastroenteritis and diarrhoea are directly linked to consumption of contaminated water (ice) at restaurants, street food stalls," said the official from health department.
"After the review, the commissioner directed ward officials to take cognisance of rising number of cases of diarrhoea and gastroenteritis. We then formed teams along with Food and Drug Administration officials last month," the official said.
According to another senior BMC official, the largest quantity of contaminated ice blocks in the city were destroyed in E ward, which included Byculla and Madanpura, followed by Dadar and Shivaji Park areas in G-North ward.
"To test the hygienic level, the civic body conducted a survey and tested ice samples from different areas. It was found that 75 per cent of the samples were contaminated and it contained E.Coli (bacteria)," the official added.
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