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Sanitation of the Indus Valley Civilisation

Sanitation of the Indus Valley Civilisation is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Sanitation of the Indus Valley Civilisation rather than just read about it. In short: The ancient Indus Valley Civilization in the Indian subcontinent (located in present-day eastern-Pakistan and north-India) was prominent in infrastructure, hydraulic engineering, and had many water supply and sanitation 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 of a standardised size.

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Reference excerpt

The ancient Indus Valley Civilization in the Indian subcontinent (located in present-day eastern-Pakistan and north-India) was prominent in infrastructure, hydraulic engineering, and had many water supply and sanitation 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 of a standardised size. The urban areas of the Indus Valley civilization included public and private baths. Many of the buildings at Mohenjo-Daro had two or more stories. They also had a sophisticated drainage system to dispose waste materials out of town. The earliest evidence of urban sanitation was seen in Harappa, Mohenjo-daro, and the recently discovered Rakhigarhi. This urban plan included the world's first urban sanitation systems. Within the city, individual homes or groups of homes obtained water from wells. Devices such as shadoofs and sakias were used to lift water to ground level. Stepwells 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). 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 floods.

Drainage system Ruins like Mohenjo-Daro in Sindh and Dholavira in Gujarat had settlements with some of the ancient world's most sophisticated sewage systems. They included drainage channels, rainwater harvesting, and street ducts. 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 drain laid along the main streets. The drains had holes at regular intervals which were used for cleaning and inspection. The water from bathrooms on the roofs and upper stories was carried through enclosed terracotta pipes or open chutes that emptied into the street drains. The Indus valley's drainage system existed 4,500 years ago.

Mohenjo-daro

Mohenjo-daro, located in Sindh, Pakistan, is one of the best excavated and studied settlements from this civilization. The Great Bath might be the first of its kind in the pre-historic period. This ancient town had more than 700 wells. The so-called "Great Granary" is the largest building at Mohenjo-daro and shows the use of granaries in the Indus Valley Civilisation.

Dholavira

Dholavira, located in Gujarat, India (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, Gujarat (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.

See also Ancient water supply and sanitation History of water supply and sanitation Ancient water conservation in India History of stepwells in Gujarat Sanitation in ancient Rome Important water resource topics of India Indus Valley Civilization Indus Valley Civilization architecture List of Indus Valley Civilisation sites List of inventions and discoveries of the Indus Valley Civilisation

References

Illustrations

Worked examples

Example 1 — a first encounter with Sanitation of the Indus Valley Civilisation

Start with the simplest possible case. Write down what Sanitation of the Indus Valley Civilisation claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Sanitation of the Indus Valley Civilisation before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Sanitation of the Indus Valley Civilisation ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Sanitation of the Indus Valley Civilisation

In research: Sanitation of the Indus Valley Civilisation appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Sanitation of the Indus Valley Civilisation in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Sanitation of the Indus Valley Civilisation is common in secondary-school and first-year university syllabi. It links to neighbouring topics History of water supply and sanitation, Indian inventions, Indus Valley Civilisation, so understanding it makes those chapters shorter.
In everyday life: Look for Sanitation of the Indus Valley Civilisation outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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Frequently asked questions

What is Sanitation of the Indus Valley Civilisation in simple terms?

Why does Sanitation of the Indus Valley Civilisation matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

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Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

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