<prompt> Qedela umusho olandelayo: Ngo-June 1866, ubhadane olwalugcwele endaweni ethile e-East End yaseLondon lwathatha ukuphila kwabantu abangu-5.596, ngesikhathi nje leli dolobha liqeda ukwakhiwa kwemisele yalo emikhulu nemishini yokwelashwa kwamanzi; ingxenye ye-East End yayingakaqedwa ngokuphelele. Kwakubangelwa futhi ukugcwala ngokweqile kwabantu edolobheni e-East End, okwasiza lesi sifo ukuba sisakazeke ngokushesha kule ndawo. Isazi sezifo eziwumshayabhuqe uWilliam Farr sathola i - East London Water Company njengomthombo walokhu kungcoliswa. UFarr wasebenzisa umsebenzi wangaphambilini kaJohn Snow nabanye, ekhomba amanzi okuphuza angcolile njengembangela engaba khona yekholera emphakathini  <response>: Ukuqubuka kwesifo ngo-1854. Ngawo lowo nyaka, ukusetshenziswa kwamanzi angcolile asemigodini emisebenzini yamanzi yasendaweni kwabangela ukuqubuka okuncane e-Ystalyfera eNingizimu Wales. Izisebenzi ezihlobene nale nkampani, nemikhaya yazo, yizo ezazithinteke kakhulu, futhi kwafa eziyi - 119. 