As regards the collection and distribution of drinking water, Salerno's spring resources were concentrated above all on the slopes of Mount Bonadies, but while the two streams Rafastia and Fusandola mainly supplied the Lombard city and its rural areas, smallest springs and numerous wells they were present almost everywhere.
The springs of Plaium Montis are well known; the monastery of San Lorenzo de Monte alone already had two in its garden and inside its cellar. In the same area of the city, in underground rooms located below the current Music Conservatory, in 1991 the Superintendence, during restoration work, unearthed a medieval balneum consisting of a main room covered with arched cross vaults and equipped with of a main adduction conduit presumably fed by the water of La Palma. We know that the water from this source was conveyed into an aquarium fabritum, ran along the stalls leading to the monastery of San Lorenzo, passed the churches of San Massimo and Santa Sofia, until it reached the church of San Giorgio. The monastery of San Giorgio itself was equipped with wells, and there were some near the churches of Santa Maria de Domno and San Massimo.
In the Orto Magno there are at least six wells mentioned by the sources: two near the bank of the Rafastia, the others near the archbishopric and the churches of San Michele, Sant'Andrea and San Tommaso. The news of two pipelines located on the banks of the Fusandola which reached the monastery of Santo Spirito and therefore the vicus of Santa Trofimena dates back to the 12th century. The first was fed by the source of Aquarola, located upstream of the Canalone hamlet, the second directly from Fusandola.