Ponthir is primarily a residential area, with several new housing estates around the older village. It has a primary school, (Ponthir Church in Wales Primary School) which was for some time under threat of closure but was reprieved, and it now has the best SATs results in Torfaen. It also changed its category to a Voluntary aided school (church) school.[5]
Ponthir has many amenities such as two nurseries, two children's playgrounds, two churches, a village hall, a cricket club, a football club (Ponthir AFC), 2 pubs - The Ponthir House and The Star, a grocery shop, a doctor and a dentist. There used to be a railway station but it closed in 1962. The railway is still in use. It is surrounded by the rolling hills of Monmouthshire, many farms, and the Afon Llwyd (meaning "grey river") runs through the village.[3]
A Welsh Water sewage and water treatment plant for the surrounding area is located here, and this was where bacteria were first used to treat sewage sludge using an electrically powered aerator to circulate the sludge and ensure good microbial digestion. This process saved the local authority money as well as reducing noxious odours.[6]