Pentrebach is a village in City and County of Swansea, Wales within the Pontarddulais ward. This article does not cite any sources. (May 2015) 51°43′39.00″N 4°01′38.00″W This Swansea location article is a stub. You can help Wikipedia by expanding it.vte Wikiwand - on Seamless Wikipedia browsing. On steroids.