This study aims to evaluate the performances and the hydraulic characteristics of two hybrid constructed wetlands (CWs), designed for the treatment of dairy and livestock wastewater (WW). CWs are located in the Ragusa area (South-East Sicily) and serving the Gulino (GF) and Mezzasalma (MF) farms. They were designed to treat a flow rate of about 3 (GF) and 5 m3/day (MF). Each system consists of a preliminary and primary treatment followed by a vertical sub-surface flow bed (VF) and a horizontal sub-surface flow bed (HF). Chemical-physical and microbiological analyses were carried out on WW samples collected at the inlet and outlet of each stage of the CWs and the removal performances were calculated. The hydraulic behavior of the GF HF bed was determined by the saturation hydraulic conductivity (Ks), conducted in three sampling points inside the HF unit. The average removal efficiencies of the WW treatment systems were about 88%, 92% and 92% for TSS, COD and BOD5, respectively. The total nitrogen was removed in higher percentages (82%) in the GF compared to MF (70%), while the efficiencies of total phosphorus removal were comparable, with average values of 78% for MF and 77% for GF. The Ks measurements carried out on the substrates of the HF units after three years of operation showed low clogging conditions. The results obtained proved that the CWs can be a valid technique for the treatment of dairy and livestock WW produced by small cattle-farms.