Ka cika wannan jumla: Kafin a kammala aikin a Hampton, gurɓataccen ruwan da kamfanin Southwark da Vauxhall Waterworks Company ke tanadarwa, wanda ke ba da ruwa ga gundumar Southwark, Battersea, da kuma wasu wurare da ke kusa, ya kai ga barkewar cutar kwalara a shekara ta 1853. Ƙarin bayani
Cutar cutar kwalara a Soho a shekara ta 1854 ta kara da gaggawa. Dukkanin barkewar cutar an yi nazarin su ne ta hanyar Dr. John Snow. Sabbin kayan aikin kamfanin a Hampton (wanda aka raba tare da wasu kamfanonin ruwa guda biyu) ya fara aiki ne kawai a shekara ta 1855.