Opuscula is published by the Swedish Institutes at Athens and Rome, with the aid of a grant from the Swedish Research Council. Distributed by Eddy.se AB. View journal at ERIH PLUS. All content available with open access. The development of the water supply on the Peloponnese in Greco-Roman times By Patrik Klingborg (Uppsala University) Abstract It has long been clear that the water supply in ancient Greece was transformed over time, with the relative number of various types of water sources varying in time and space. Yet, what patterns this produced has never been explored, and the degree to which trends suggested by local or qualitative studies are representative for larger areas and patterns is unknown. The root of this uncertainty lies largely in the difficulty assembling an extensive and representative material beyond individual sites or cities. Following this, the present article has two aims. The first is to test and evaluate a method for collecting an extensive and (more) representative material for the investigation of the water supply in ancient Greece on a regional scale, based on a systematic review of the material from the Peloponnese published in Archaeological Reports 1887–2012. The second aim is to discuss how the collected data…