In this work, three different techniques, namely time domain reflectometry (TDR), ground
penetrating radar (GPR) and electrical resistivity tomography (ERT) were experimentally
tested for water leak detection in underground pipes. Each technique was employed in three
experimental conditions (one laboratory or two field experiments), thus covering a limited but
significant set of possible practical scenarios. Results show that each of these techniques
may represent a useful alternative/addition to the others. Starting from considerations on the …