Grontmij was called in by the IDA find a solution to the ever increasing water charges. After brief discussions and analysing flow-data, it was decided a site survey was required in order to identify the reason for the high water consumption.

Upon completion of the survey, Grontmij Ireland concluded that the main reason for the high base load was underground leakage at 12m3/hour.

Action Taken

Grontmij’s leakage team carried out tracing of all underground water supplies, then by shutting down various sections of the site, pinpointed suspect areas, using leak noise correlation devices.

Twelve significant leaks were located and they were excavated and repaired overnight. Further internal investigations were carried out which revealed a number of urinals flushing without controls, and valve to an overflow from a large storage tank on the roof also required attendance.

Total Savings Achieved: € 219,000.00 per year