What is "sarno"

The Sarno, known as Sarnus to the Romans, is a stream that passes through Pompeii to the south of the Italian city of Naples. It is considered the most polluted river in Europe. as the result of industrial waste. It flows about from the base of Mt. Sarno to the Bay of Naples collecting water from the Solofrana and Cavaiola tributaries during the course of its flow.

It is still partially used for irrigation, as well as the transportation of goods and fishing. It is part of the Sarno river basin, which covers about .

Sarno is a town and comune and former Latin Catholic bishopric of Campania, Italy, in the province of Salerno, 20 km northeast from the city of Salerno and 60 km east of Naples by the main railway.