<prompt> Ramba uchinyora ndima iyi - Masisitimu emazuva ano ekuyerera mvura haana kuoneka kutozosvikira muzana remakore rechi19 kuWestern Europe, kunyange zvazvo mazhinji emasisitimu aya akavakwa zvikurukuru kuti agadzirise zvinetso zvemvura yakasviba zvinomuka kubva mukukura kwemaguta nokukurumidza. Mumwe muenzaniso wakadaro ndewefesheni yokuLondon, iyo yakavakwa kurwisa kusvibiswa kukuru kwoRwizi rwaThames. Panguva iyoyo, Rwizi rwaThames ndirwo rwaiva chinhu chikuru pakurasa tsvina muLondon, tsvina yevanhu ichiungana mumvura yaiva pedyo nepakati peguta raiva nevanhu vakawanda. Somugumisiro, zvirwere zvinoverengeka zvakatambudza vagari veLondon uye kunyange nhengo dzeParamende, kubatanidza zviitiko zvinozivikanwa sokupararira kwecholera muBroad Street muna 1854  <response>: uye Kunhuhwa Kukuru kwa1858. Kuva nehanya noutano hwevanhu uye kunaka kwoupenyu kwakaita kuti pave nezvirongwa zvakawanda, zvakazoita kuti pave negadziriro yemazuva ano yokufambisa tsvina muLondon yakagadzirwa naJoseph Bazalgette. Iyi gadziriro itsva yakanangidzirwa zvakananga pakuva nechokwadi chokuti mvura yakasviba inodzorerwa kure nemanyuko emvura sezvinobvira kuitira kuderedza tyisidziro yezvirwere zvinoparadzirwa nemvura. Kubvira ipapo, migero yakawanda yemvura mumaguta yave ichinangidzira ngwariro pazvinangwa zvakafanana zvokudzivisa ngwavaira dzoutano hwavanhu. 