Treharris is a village and area (as well as electoral ward) in the Taff Bargoed Valley in the south of Merthyr Tydfil County Borough, South Wales. It is located concerning 0.6 miles (1.0 kilometres) west of Trelewis, where it is separated by the Taff Bargoed river, and 0.9 miles (1.4 kilometres) from Nelson in Caerphilly region district and also has a population of 6,252, enhancing to 6,356 at the 2011 Census. As an area, Treharris consists of the towns of Quakers Yard and also Edwardsville. As a result of steepness as well as narrowness of both the Taff and Taff Bargoed valleys at Treharris several remarkable bridges and also viaducts have actually been constructed in the location. Throughout the very early 21st century, like many ex-mining villages in the area, Treharris went through significant regeneration to the town/village centre. Many, otherwise all of the land where Deep Navigating was located has actually been landscaped and also is currently part of the brand-new Parc Taff Bargoed, where a number of the regional football and also rugby groups train and play.