Its designated catchment area includes the following municipalities of the central and eastern Ostalbkreis district: Abtsgmünd, Bopfingen, Essingen, Hüttlingen, Kirchheim am Ries, Lauchheim, Neresheim, Oberkochen, Riesbürg and Westhausen, and is interwoven with the catchment area of Nördlingen, situated in Bavaria, 30 kilometers east of Aalen.