Optical and acoustic televiewers for water bore assessment: helping to maintain community infrastructure
Water security came under the spotlight after the 2016 bore contamination in Hawke's Bay that affected over 5,000 people.
RDCL uses down-hole geophysics to accurately assess the integrity of water bores for several clients, including Hastings District Council following the water-bore contamination in Havelock North.
Many water bores are legacy assets with limited records on installation. Typically, infrastructure assessments focus on above-ground assets, such as filtration systems and chlorination. However the integrity of below-ground assets, and their relationship with soil conditions, is harder to determine without specialised equipment.
RDCL have assessed six water bores for the Hastings Council in 2016 and 2017 and will continue to increase the service across other wells working within the complex scheduling to ensure limited impact on public water supply.
RDCL creates datasets of the water bores using optical and acoustic televiewers. These tools provide high-resolution, 3D datasets of the bores, which are recorded against Council assets and used for future assessments and maintenance schedules.