Indoor Plumbing
Water and sewer systems were very important to the Harappans because it helped them do things thy needed to do such as bathing. These sewer systems included drains. These drains were on both sides of the Great Bath so that dirty water could flow out of the Great Bath. They also had underground drains that took waste out of the city. Mohenjo-Daro was the first city to have a sewer system. The sewer systems even helped them make the first toilet. This is important because we would not have the great plumbing we have today and the sewer systems help us carry water different places. The sewer systems also helped make the Great Bath.