Blackwater is a rural village in County Wexford, Ireland. It lies mostly within the townland of Ballynaglogh on the R742 regional road 16 km north of Wexford town. Evidence of ancient settlement in the area includes a number of ringfort, holy well, motte and ecclesiastical enclosure sites in the townlands of Ballynaglogh, Inch, Glebe and Castletalbot. A church an…Blackwater is a rural village in County Wexford, Ireland. It lies mostly within the townland of Ballynaglogh on the R742 regional road 16 km north of Wexford town. Evidence of ancient settlement in the area includes a number of ringfort, holy well, motte and ecclesiastical enclosure sites in the townlands of Ballynaglogh, Inch, Glebe and Castletalbot. A church and graveyard site, in Glebe townland, contained a church that was standing as of the early 17th century but was in ruin by at least the mid-19th century.