Paris moved millions of bones into old quarries in the 1780s because overcrowded cemeteries threatened public health and the abandoned mines under the city needed to be shored up.
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Utilities typically clump and settle out particles, filter the water, and disinfect it. The exact steps depend on whether the source is surface water or groundwater.
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The Great Stink was a summer 1858 episode in which hot weather worsened the stench of sewage on the Thames. It pushed Parliament to fund Bazalgette's new sewer system.
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