Ms Margaret Attridge:

The plant operators would check the trends daily. Even if alarms do not go off they should check the trends daily just to make sure the plant is operating within compliance. At local authority level, the local authority management would have oversight of the local authorities' SCADA systems to check remotely the performance of the treatment plants, so that would be carried out periodically as well. As part of our training procedures we will be going through the checks that are to be carried out on-site and at a local authority management level with all local authority staff.