Technology
The ancient Romans also had a complex system of aqueducts, which were used to transport water across long distances. The first Roman aqueduct was built in 312 BCE. The eleventh and final ancient Roman aqueduct was built in 226 CE. Put together, the Roman aqueducts extended over 450 kilometers, but less than seventy kilometers of this was above ground and supported by arches.
Neher water system
The reason for the construction of the aqueduct was the discovery of a subterranean water supply in the mountainous valleys north of Aurangabad. The consequent construction of the waterway provided a stable water supply for a population of around seven lakhs (around seven hundred thousand people), with the city of Aurangabad receiving enough fresh water to prevent the shortages that had previously occurred. The aqueduct was named Khair-E-Jari. The construction of such aqueducts continued from 1612 until 1803 with two more aqueducts constructed by engineers such as Malik Ambar, Shah Mehmood of Panchakki and Shah Ali Nahri.
Malik Ambar's design was not well received and it was described by Vazir Mullah Mohammad as imaginary and preposterous. However, Malik Ambar managed to construct it within fifteen months, at half the estimated cost.