India was the birthplace of plumbing, though the Romans perfected it. Standardized earthen plumbing pipes with broad flanges making use of asphalt for preventi

India was the birthplace of plumbing, though the Romans perfected it. Standardized earthen plumbing pipes with broad flanges making use of asphalt for preventing leakages appeared in the urban settlements of the Indus Valley Civilization by 2700 B.C.[5] https://en.wikipedia.org/wiki/Plumbing https://en.wikipedia.org/wiki/Plumbing https://en.wikipedia.org/wiki/History_of_water_supply_and_sanitation https://en.wikipedia.org/wiki/History_of_water_supply_and_sa...