The ancient Indus Valley Civilization in

South Asia South Asia is the southern subregion of Asia, which is defined in both geographical Geography (from Greek: , ''geographia''. Combination of Greek words ‘Geo’ (The Earth) and ‘Graphien’ (to describe), literally "earth descr ...

, including current day's

Pakistan Pakistan ( ur, ), officially the Islamic Republic of Pakistan ( ur, , label=none), is a country in South Asia. It is the world's fifth-most populous country, with a population of almost 243 million people, and has the world's second-lar ...

and north

India India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the so ...

, was prominent in infrastructure,

hydraulic engineering Hydraulic engineering as a sub-discipline of civil engineering is concerned with the flow and conveyance of fluids, principally water and sewage. One feature of these systems is the extensive use of gravity as the motive force to cause the m ...

, and had many

water supply Water supply is the provision of water by public utilities, commercial organisations, community endeavors or by individuals, usually via a system of pumps and pipes. Public water supply systems are crucial to properly functioning societies. Thes ...

and

sanitation Sanitation refers to public health conditions related to clean drinking water and treatment and disposal of human excreta and sewage. Preventing human contact with feces is part of sanitation, as is hand washing with soap. Sanitation syste ...

devices that are the first known examples of their kind.

General

Most houses of Indus Valley were made from mud, dried mud bricks, or clay bricks. The urban areas of the Indus Valley civilization included public and private baths. Sewage was disposed of through underground drains built with precisely laid bricks, and a sophisticated water management system with numerous reservoirs was established. In the drainage systems, drains from houses were connected to wider public drains. Many of the buildings at Mohenjo-Daro had two or more stories. Water from bathrooms on the roofs and upper stories was carried through enclosed terracotta pipes or open chutes that emptied onto the street drains. The earliest evidence of urban sanitation was seen in Harappa,

Mohenjo-daro Mohenjo-daro (; sd, موئن جو دڙو'', ''meaning 'Mound of the Dead Men';Rakhigarhi Rakhigarhi or Rakhi Garhi is a village and an archaeological site belonging to the Indus Valley civilisation in Hisar District of the northern Indian state of Haryana, situated about 150 km northwest of Delhi. It was part of the mature ph ...

. This urban plan included the world's first urban sanitation systems. Within the city, individual homes or groups of homes obtained water from wells. From a room that appears to have been set aside for bathing, wastewater was directed to covered drains, which lined the major streets. Devices such as

shadoof A shadoof or shaduf (from the Arabic word , ''šādūf'') is an irrigation tool. It is highly efficient, and has been known since 3000 BCE. Names It is also called a lift, well pole, well sweep, or simply a sweep in the US.Knight, Edward Henry ...

s and

sakia A sāqiyah or saqiya ( ar, ساقية), also spelled sakia or saqia) is a mechanical water lifting device. It is also called a Persian wheel, tablia, rehat, and in Latin tympanum. It is similar in function to a scoop wheel, which uses buckets, ...

s were used to lift water to ground level. Ruins like Mohenjo-Daro in Pakistan and

Dholavira Dholavira ( gu, ધોળાવીરા) is an archaeological site at Khadirbet in Bhachau Taluka of Kutch District, in the state of Gujarat in western India, which has taken its name from a modern-day village south of it. This village is ...

Gujarat Gujarat (, ) is a state along the western coast of India. Its coastline of about is the longest in the country, most of which lies on the Kathiawar peninsula. Gujarat is the fifth-largest Indian state by area, covering some ; and the ninth ...

in India had settlements with some of the ancient world's most sophisticated sewage systems. They included drainage channels, rainwater harvesting, and street ducts.

Stepwell Stepwells (also known as vavs or baori) are wells or ponds with a long corridor of steps that descend to the water level. Stepwells played a significant role in defining subterranean architecture in western India from 7th to 19th century. So ...

s have mainly been used in the Indian subcontinent. Several courtyard houses had both a washing platform and a dedicated toilet/waste disposal hole. The toilet holes would be flushed by emptying a jar of water, drawn from the house's central well, through a clay brick pipe, and into a shared brick drain, that would feed into an adjacent soak pit (

cesspit A cesspit (or cesspool or soak pit in some contexts) is a term with various meanings: it is used to describe either an underground holding tank (sealed at the bottom) or a soak pit (not sealed at the bottom). It can be used for the temporary co ...

). The soak pits would be periodically emptied of their solid matter, possibly to be used as fertilizer. Most houses also had private wells. City walls functioned as a barrier against

flood A flood is an overflow of water ( or rarely other fluids) that submerges land that is usually dry. In the sense of "flowing water", the word may also be applied to the inflow of the tide. Floods are an area of study of the discipline hydrol ...

Mohenjo-daro

Mohenjo-daro Mohenjo-daro (; sd, موئن جو دڙو'', ''meaning 'Mound of the Dead Men';Sindh, Pakistan, is one of the best excavated and studied settlements from this civilization. The

Great Bath The Great Bath is one of the best-known structures among the ruins of the Harappan Civilization excavated at Mohenjo-daro in Sindh, Pakistan.

might be the first of its kind in the pre-historic period. This ancient town had more than 700 wells, and most houses in Mohenjo-Daro had at least one private well.

Dholavira

, located in

(c. 3000-1500 BC), had a series of water storage tanks and step wells, and its water management system has been called "unique". Dholavira had at least five baths and the size of one is comparable with the Great Bath of Mohenjo-daro.

Lothal

Lothal Lothal () was one of the southernmost sites of the ancient Indus Valley civilisation, located in the Bhāl region of the modern state of Gujarāt. Construction of the city is believed to have begun around 2200 BCE. Archaeological Survey of ...

(c. 2350–1900 BC), excavation of the site has identified two wells in the city, one in the acropolis and the other by the dock. In addition, more than a dozen houses of the acropolis possessed their own internal bathing platform which drained into a covered communal sewer constructed of brickwork held together with a gypsum-based mortar and which emptied into a cesspit outside the town's wall. A relatively large house in the acropolis had a bathing platform with an attached latrine, that fed into a separate open drain, and discharged into the town's dock. The Lower town hosts a number of soak pots, large sunken jars with a hole in the bottom, to permit liquids to drain, which were regularly emptied and cleaned.

References

{{Indus Valley civilization Indus Valley civilisation History of water supply and sanitation Water supply and sanitation in India Water supply and sanitation in Pakistan Indian inventions Inventions of the Indus Valley civilisation

General

Mohenjo-daro

Dholavira

Lothal

See also

References