Lead water pipe, Roman, c. 1-300 CE. The inscription cast into the side of the pipe indicates that the work was undertaken by a team under an Imperial Freeman Procurator Aquarum - an official in charge of maintaining the water supply. In some Roman towns and cities, piped water supplies were installed which were of a complexity and sophistication that would not be repeated for many centuries. Unfortunately, at the time it was not realized that lead reacts with water to create toxins, some of which are harmful to the body. It also affects the taste of the water.