Utilitis use satellite tech, ...
Published by Judith Powling, Director
Utilitis use satellite tech, as highlighted here by others, and were at recent Aquatech talking on this. Also VertexAir have worked with UK water companies on leakage to:
undertake subsurface water leak surveys using UAV mounted thermal imaging camera. On cold mornings (0C-2C) any escaped water (10C-12C) is clear on the thermal image. The benefits of using a UAV mounted thermal imaging camera is that it allows survey of large areas in a short space of time and with access typically difficult or inaccessible areas such as rural land.
Might be helpful