We have completed and commissioned a new 37m deep 6” borehole test facility at our U.K. technical centre in mid-Devon. The new facility will enable intensive experimental testing and development of production Impact Pumps at a greater range of heads and flows than existing above-ground test-towers on the same site, which are limited to 10m. It will also host high-flow (stress) endurance tests when not in use for development, and enable experimental work to begin on new concepts, including our novel approach to ultra-low-cost groundwater level monitoring and hydro-power generation from aquifer recharge.