"Thames" and "Tamesis" redirect here. For other uses of "Thames", see

Victorian era[edit]

Satirical cartoon by William Heath, showing a woman observing monsters in a drop of London water (at the time of the Commission on the London Water Supply report, 1828)
In the 19th century the quality of water in Thames deteriorated further. The discharge of raw sewage into the Thames was formerly only common in the City of London, making its tideway a harbour for many harmful bacteria. Gasworks were built alongside the river, and their by-products leaked into the water, including spent lime, ammonia, cyanide, and carbolic acid. The river had an unnaturally warm temperature caused by chemical reactions in the water, which also removed the water's oxygen.^[51] Four serious cholera outbreaks killed tens of thousands of people between 1832 and 1865. Historians have attributed Prince Albert's death in 1861 to typhoid that had spread in the river's dirty waters beside Windsor Castle.^[52] Wells with water tables that mixed with tributaries (or the non-tidal Thames) faced such pollution with the widespread installation of the flush toilet in the 1850s.^[52] In the 'Great Stink' of 1858, pollution in the river reached such an extreme that sittings of the House of Commons at Westminster had to be abandoned. Chlorine-soaked drapes were hung in the windows of Parliament in an attempt to stave off the smell of the river, but to no avail.^[53]
A concerted effort to contain the city's sewage by constructing massive sewer systems on the north and south river embankments followed, under the supervision of engineer Joseph Bazalgette. Meanwhile, similar huge undertakings took place to ensure the water supply, with the building of reservoirs and pumping stations on the river to the west of London, slowly helping the quality of water to improve.
The Victorian era was one of imaginative engineering. The coming of the railways added railway bridges to the earlier road bridges and also reduced commercial activity on the river. However, sporting and leisure use increased with the establishment of regattas such as Henley and the Boat Race. On 3 September 1878, one of the worst river disasters in England took place, when the crowded pleasure boat Princess Alice collided with the Bywell Castle, killing over 640 people.