| Eugène Belgrand | |
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| Born | 1810 |
| Died | 1878 |
| Nationality | French |
| Occupation | Civil Engineer |
Eugène Belgrand (1810–1878) was a French engineer who made significant contributions to the modernization of the Parisian sewer system during the 19th century rebuilding of Paris. Much of Belgrand's work remains in use today.[1]
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Prior to 1850, the water system in Paris was inadequate for its growing population. Waste water was discharged into the Seine, a primary source of the critically limited supply of drinking water.[2] Baron Haussmann, tasked by Napoléon III to modernize the city, appointed Belgrand as Director of Water and Sewers of Paris in March 1855.[3] Hausmann had been impressed by the École Polytechnique graduate's application of geology to water engineering during the design of a fountain in Avallon.
Belgrand embarked on an ambitious project. The tunnels he designed were intended to be clean, easily accessible, and substantially larger than the previous Parisian underground.[4] Under his guidance, Paris's sewer system expanded fourfold between 1852 and 1869.[5] He also addressed the city's fresh water needs, constructing a system of aqueducts that nearly doubled the amount of water available per person per day and quadrupled the number of homes with running water.[6]
Public reaction to the improvements was overwhelmingly favorable, supported by tours of the newly-constructed sewer system and a series of photographs taken by Nadar,[7] pioneering the use of artificial lighting for photography.[8] Belgrand shared his insights with others, writing "monumental publications"[9] detailing his work and the science behind it.[10]
Belgrand's projects remain "one of the most extensive urban sewer systems in the world"[1] and served as a "transitional phase" leading to modern wastewater processing.[11]
To commemorate his work in Parisian civil engineering, Belgrand's name is one of 72 names engraved on the Eiffel Tower, opposite the École Militaire.[12] The main gallery of the Paris Sewer Museum[13] is also named in his honor, as is a street in Paris.[14]
rue Belgrand, Paris
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