Transacqua  Transacqua was a "comune" (municipality) in Trentino in the northern Italian region Trentino-Alto Adige/Südtirol, located about east of Trento. As of 31 December 2004, it had a population of 2,007 and an area of . It was merged with Siror, Tonadico and Fiera di Primiero on January 1, 2016, to form a new municipality, Primiero San Martino di Castrozza. The municipality of Transacqua contains the "frazioni" (subdivisions, mainly villages and hamlets) Ormanico ("Hermannich") and Pieve. Transacqua borders the following municipalities: Siror ("Siraur"), Sagron Mis ("Sagraun"), Mezzano ("Matzan im Taufers"), Cesiomaggiore, Tonadico ("Thunadich") and Fiera di Primiero ("Markt Primör").