Water engineering in the Roman Empire was at the highest level. Aqueduct network supplied ancient Rome in the 2nd century CE with one million cubic meters of water per day. In some places, the area around the aqueducts was drained to prevent contamination by groundwater.
Water quality was monitored in the aqueducts and even the health of the people living near them was monitored. In Rome, running water was supplied to the public baths, lavatories, fountains and villas of the higher-ranking Roman citizens.