WJ has extensive experience of undertaking pumping tests to investigate hydrogeological conditions. Test arrays may consist of a single pumped deepwell, a group of wells, an ejector system or a wellpoint system. Monitoring of abstraction flows and groundwater levels is routinely fully automated using appropriate sensors and dataloggers, and the information is displayed on WJ’s secure monitoring web site during the test. WJ is experienced in specifying test systems and procedures that optimise data relevant to the aim of the investigation. WJ can produce both factual and interpretative reports from the pumping test data.