Completed the following sentence: In June 1866, a localized epidemic in the East End of London claimed 5,596 lives, just as the city was completing construction of its major sewage and water treatment systems; the East End section was not quite complete. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ Epidemiologist William Farr identified the East London Water Company as the source of the contamination.<unk> Epidemiologist William Farr identified the East London Water Company as the source of the contamination. Farr made use of previous work by John Snow and others, pointing to contaminated drinking water as the likely cause of cholera in an
1854 outbreak. same year, the use of contaminated canal water in local water works caused a minor outbreak at Ystalyfera in South Wales. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️