These water fountains flow constantly with fresh drinking water for anyone to use and they are everywhere in Rome. Covering the spout with your finger forces the water out a hole on top, creating a arch of water at perfect πΌπ΅πΎπ»πΉπ²π·π° height. The Romans were/are with us.
Possibly - though they do all look alike! IIRC, this one is on Via dei Cappellari, just south of the junction with Via Pellegrino. I was walking away from Campo de Flori when I took this.