Alto Calore Servizi S.p.A., abbreviated ACS, was established on March 13, 2003. Alto Valore Servizi is a joint stock company consisting of 126 shareholders: 125 municipalities in the province of Avellino and Benevento and the administration of the province of Avellino. Alto Calore Servizi works in the field of collection and distribution of drinking water, sewerage and wastewater treatment.