A system configured for installation in a pumping station, the system comprising: a level sensor configured to be installed in a reservoir of the pumping station and configured to, in use, monitor a liquid level ( l) in the reservoir and generate a level data based on the monitored liquid level ( l); a power monitor configured to, in use, monitor a power consumed (p) by a pump and generate a power data based on the monitored power consumption, wherein, in use, the pump pumps liquid out of the reservoir to a system outlet or into the reservoir from a system inlet; a flow monitor configured to be installed in the reservoir and configured to, in use, monitor a volume of liquid pumped and generate a volume data based on the monitored volume of liquid; a pressure sensor, the pressure sensor configured to be installed between the reservoir and the system outlet or between the system inlet and the reservoir and configured to, in use, measure a discharge pressure (Pd) and generate a pressure data based on the measured discharge pressure (Pd); and a controller configured to, in use: receive the power data, the volume data, the discharge pressure data and the level data; process the discharge pressure (Pd) to determine a discharge head (Hd) of the pump; process the level data to determine a static head (Hs) of the pump; process the discharge head (Hd) and the static head (Hs) to determine a total dynamic head of the pump; and process the total dynamic head, the volume data and the power data to determine a normalised pumping station efficiency (nSPE). a level sensor configured to be installed in a reservoir of the pumping station and configured to, in use, monitor a liquid level ( l) in the reservoir and generate a level data based on the monitored liquid level ( l); a power monitor configured to, in use, monitor a power consumed (p) by a pump and generate a power data based on the monitored power consumption, wherein, in use, the pump pumps liquid out of the reservoir to a system outlet or into the reservoir from a system inlet; a flow monitor configured to be installed in the reservoir and configured to, in use, monitor a volume of liquid pumped and generate a volume data based on the monitored volume of liquid; a pressure sensor, the pressure sensor configured to be installed between the reservoir and the system outlet or between the system inlet and the reservoir and configured to, in use, measure a discharge pressure (Pd) and generate a pressure data based on the measured discharge pressure (Pd); and a controller configured to, in use: receive the power data, the volume data, the discharge pressure data and the level data; process the discharge pressure (Pd) to determine a discharge head (Hd) of the pump; process the level data to determine a static head (Hs) of the pump; process the discharge head (Hd) and the static head (Hs) to determine a total dynamic head of the pump; and process the total dynamic head, the volume data and the power data to determine a normalised pumping station efficiency (nSPE). receive the power data, the volume data, the discharge pressure data and the level data; process the discharge pressure (Pd) to determine a discharge head (Hd) of the pump; process the level data to determine a static head (Hs) of the pump; process the discharge head (Hd) and the static head (Hs) to determine a total dynamic head of the pump; and process the total dynamic head, the volume data and the power data to determine a normalised pumping station efficiency (nSPE).