The community lies in the Westerwald between Koblenz and Limburg an der Lahn on the edge of the Nassau Nature Park on the boundary with Hesse.

This most important of village festivals is held each year on the last weekend in August and recalls the consecration of the parish church of St. Katharina in 1906.

On 19 August 1906, the new church building was ceremonially blessed by Bishop Dominikus Willi Since Niedererbachers were once known for making little whistles from willow twigs, they are sometimes still known as Erwocher Peifscher today.

In the last direct vote for mayor (Ortsbürgermeister), held on the same day, Gerhard Theis was elected to office as the only candidate for a further four years.

These are clubs that make it their business to improve or promote the community: The nearest Autobahn interchange is Diez - Nentershausen on the A 3 (Cologne–Frankfurt), some 3 km away.

The Unterwesterwaldbahn was fully modernized technically in early 2007 to a state-of-the-art level, thus ensuring continued running for years.