The London sewage system is part of the water infrastructure serving London, England. The modern system was developed during the late 19th century, and as London has grown the system has been expanded. During the early 19th century, London used the River Thames as an open sewer which due to the citys growth, became outdated and started causing a foul stench and disastrous consequences for public health in London. A civil engineer by the name of Joseph Bazalgette took over the job of building this underground infrastructure. He built a modern sewer system that purified the city and resulted in the end of the epidemics of cholera and typhoid that had sickened the population.