Before revision: alt=|300x300px| London Sewage system being built in 1860 Modern drainage systems did not appear until the 19th century in Western Europe, although most of these systems were primarily built to deal with sewage issues rising from rapid urbanization.
After revision: alt=|300x300px| Bazzalgette combined sewer, London system being built in 1860 Modern drainage systems did not appear until the 19th century in Western Europe, although most of these systems were primarily built to deal with sewage issues rising from rapid urbanization.