Plombières official until 1919 Bleyberg (French pronunciation: [plɔ̃bjɛʁ]; German: Bleyberg or Bleiberg, Dutch: Blieberg; Walloon: So-on-Mont-d'-Plomb) is a municipality of Wallonia located in the province of Liège, Belgium.

The total area is 53.17 km2 which gives a population density of 200 inhabitants per km2.

[2] The municipality consists of the following districts: Gemmenich, Hombourg, Montzen, Moresnet, and Sippenaeken.

[3] The local language is Low Dietsch, a bridge dialect between East Limburgish and Ripuarian.

[4] This Liège Province location article is a stub.