History of water supply and sanitation
Around 8500 BCE, people in Cyprus dug the first permanent water wells. These deep holes allowed vessels to be filled by hand for daily use. Another well appeared around 6500 BCE in the Jezreel Valley. Settlement size depended heavily on how much fresh water existed nearby. In Orkney, Scotland, a village called Skara Brae featured stone channels lined with tree bark inside houses from around 3000 BCE. This primitive system carried both fresh water and wastewater away from living spaces. A cell-like enclave within some homes may have served as an early indoor latrine. The Neolithic Chinese discovered deep drilled groundwater for drinking between 6000 and 7000 years ago. They used four rows of logs with square frames at the top of these wells. Sixty additional tile wells southwest of Beijing were built around 600 BCE for irrigation and drinking purposes.
Mesopotamians introduced clay sewer pipes around 4000 BCE to remove wastewater from sites like Nippur and Eshnunna. The city of Uruk demonstrated brick constructed latrines from 3200 BCE. Clay pipes later appeared in Hittite cities where segments could be easily detached and replaced. Ancient Persia utilized qanats and ab anbars for water supply and cooling near Zabol. The Pyramid of Sahure contained copper drainage pipes connecting to temple complexes. Indus Valley cities like Mohenjo-daro and Harappa developed underground drains made of precisely laid bricks by 2200 BCE. These systems included soak pits outside town walls and covered brick sewers held together with gypsum-based mortar. Lothal featured private bathing platforms connected to open street drains that discharged into docks. Water flowed through enclosed terracotta pipes or open chutes from upper storey bathrooms onto street drains. Minoan civilization on Crete built advanced underground clay pipes for sanitation as early as the 16th century BCE. Knossos had a well-organized system bringing clean water while taking out waste water and storm sewage canals. An inverted siphon system using glass-covered clay pipes remained functional after about 3000 years.
In Nepal, carved stone fountains called dhunge dharas supplied drinking water starting at least as early as 550 AD. By 2008 these spouts produced 2.95 million litres of water per day across the Kathmandu Valley. Islamic hygienical jurisprudence dating back to the 7th century mandated ritual washing before daily prayers. The Abbasid Caliphate capital Baghdad contained 65,000 baths along with a sewer system during the 8th to 13th centuries. Multi-storey tenement buildings in Fustat reached up to six floors with flush toilets connected to underground channels. Medieval European cities covered small natural waterways to function as sewers. London's River Fleet became such a system where open gutters ran along street centers. Hugues Aubird designed Paris' first closed sewer in 1370 on Rue Montmartre measuring one mile long. Dubrovnik established parameters for septic tank construction through its Statute of 1272. Sir John Harington invented a flush toilet device for Queen Elizabeth I that released wastes into cesspools during the 16th century. Contents from London outhouses were collected nightly by commissioned wagons and delivered to nitrite beds producing saltpeter.
Cholera outbreaks occurred in London in 1832, 1849 and 1855 killing tens of thousands due to contaminated water supplies. The Great Stink of 1858 made untreated human waste smell overpowering in the River Thames. Parliament resolved to create a modern sewerage system after this event. Joseph Bazalgette constructed six main interceptor sewers totaling almost 100 miles between 1859 and 1865. Construction required 318 million bricks and 2.7 million cubic metres of excavated earth. James Newlands laid down comprehensive outlet systems in Liverpool beginning July 1848. Over eleven years he built 86 miles of new sewers adding another 58 miles between 1856 and 1862. Life expectancy in Liverpool more than doubled before his retirement compared to 19 years prior. Hamburg received its first comprehensive sewer system mid-19th century while Frankfurt began work in 1863 based on William Lindley designs. Twenty years after completion typhoid death rates fell from 80 to 10 per 100,000 inhabitants.
John Gibb installed an experimental sand filter at his bleachery in Paisley Scotland in 1804 selling surplus to the public. Engineer James Simpson created the world's first treated public water supply for Chelsea Waterworks Company in London in 1829. The Metropolis Water Act required all water be effectively filtered starting the 31st of December 1855. William Soper used chlorinated lime to treat sewage produced by typhoid patients in 1879. Moritz Traube formally proposed adding chloride of lime to water to render it germ-free in a paper published in 1894. Maidstone Kent became the first town to have its entire water supply treated with chlorine in 1897. Permanent water chlorination began in 1905 when Dr Alexander Cruickshank Houston stopped a serious typhoid fever epidemic in Lincoln England. Continuous use of chlorine in the United States started in 1908 at Boonton Reservoir serving Jersey City New Jersey. Doses ranged between 0.2 and 0.35 ppm using calcium hypochlorite solutions.
Edward Frankland conducted experiments at Croydon sewage farm during the 1870s demonstrating filtration through porous gravel produced nitrified effluent. William Dibdin took up this concept as chief chemist for London Metropolitan Board of Works in 1887. Filters working on his principle were constructed throughout the UK from 1885 to 1891. The Lawrence Experiment Station developed a trickling filter giving much more reliable performance in 1890. Contact beds containing inert substances like stones maximized surface area available for microbial growth breaking down sewage. Joseph Corbett simultaneously developed bacterial bed methods showing superior volume purification capabilities by 1905. Scientists at University Manchester discovered activated sludge process in 1912 adding effective systems to most Western cities. The Royal Commission published its eighth report setting international standards allowing two parts per hundred thousand biochemical oxygen demand in 1912.
John Snow used dot distribution maps and statistical proof to illustrate connections between water quality and cholera cases during 1854 Broad Street outbreak. His data convinced local council to disable the water pump ending the epidemic immediately. Edwin Chadwick played key role using miasma theory to back plans improving sanitation situation in Britain. Antonie van Leeuwenhoek and Robert Hooke observed small material particles suspended in water using newly invented microscopes. Marcus Terentius Varro wrote about minute creatures floating in air entering bodies through mouth and nose causing serious diseases in 36 BCE. Dr H Trendley Dean investigated fluorosis epidemiology starting 1931 discovering fluoride levels up to 1.0 ppm did not cause enamel fluorosis in most people. Grand Rapids Michigan became first city world to fluoridate drinking water following vote by City Commission in 1944.
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Common questions
When did people in Cyprus dig the first permanent water wells?
People in Cyprus dug the first permanent water wells around 8500 BCE. These deep holes allowed vessels to be filled by hand for daily use.
What ancient civilization built underground drains made of precisely laid bricks by 2200 BCE?
Indus Valley cities like Mohenjo-daro and Harappa developed underground drains made of precisely laid bricks by 2200 BCE. These systems included soak pits outside town walls and covered brick sewers held together with gypsum-based mortar.
Who constructed six main interceptor sewers totaling almost 100 miles between 1859 and 1865?
Joseph Bazalgette constructed six main interceptor sewers totaling almost 100 miles between 1859 and 1865. Construction required 318 million bricks and 2.7 million cubic metres of excavated earth.
Which city became the first to fluoridate drinking water following a vote by City Commission in 1944?
Grand Rapids Michigan became the first city world to fluoridate drinking water following a vote by City Commission in 1944. Dr H Trendley Dean investigated fluorosis epidemiology starting 1931 discovering fluoride levels up to 1.0 ppm did not cause enamel fluorosis in most people.
When did Maidstone Kent become the first town to have its entire water supply treated with chlorine?
Maidstone Kent became the first town to have its entire water supply treated with chlorine in 1897. Permanent water chlorination began in 1905 when Dr Alexander Cruickshank Houston stopped a serious typhoid fever epidemic in Lincoln England.