The "Fortbildungsschule", which had long been run as a Sunday school (inasmuch as classes were held on Sunday; it was not religious), became a Wednesday afternoon school beginning in 1906. In 1935, the eighth school year was introduced, in 1966/1967 the ninth and in 1991/1992 the tenth. The "Rothenfeldschule" is a combined primary school and "Regionale Schule" with the tenth class. Since the 2007/2008 school year it has been the only school in Rhineland-Palatinate to offer year-round daycare. On Breitenbacher Straße stands a modern electrical substation owned by Pfalzwerke, which ensures the electrical supply for both home and industry. Waldmohr manages to do without any partnerships to ensure its water supply, having its own deep wells, pumphouses and cisterns. A sewage treatment plant costing 10,000,000 DM (about €5,113,000), built to handle a capacity of 10,000 inhabitants, has been brought into service and uses the most modern wastewater treatment. The whole village is supplied with both electricity and natural gas. At the turn of the 20th century, the village even owned its own gasworks, although this was shut down in the First World War owing to unprofitability. Saarpfalzstraße, which was built as a relief and bypass road for the former Hauptstraße (now Rathausstraße), is now the main road within the municipality, and as "Bundesstraße" 423 also the most important road for through traffic. Also particularly busy within the municipality are "Landesstraße" 354, leading to the commercial-industrial park and, by way of "Landesstraße" 355, to interchange 50 on the Autobahn A 6 (Saarbrücken–Mannheim) – sometimes called "Via Carolina" – and the Waldmohr service centre with its motel, and "Kreisstraße" (District Road) 3 from the village centre to Höchen and Bexbach. Also heavily frequented are Bahnhofstraße and Rathausstraße. As early as 1985, the daily number of vehicles at the edge of the village going towards Kübelberg reached 4,852, and at the edge of the village going towards Jägersburg, it reached 5,505.