Unforeseen repair costs in the sewer system are the nightmare of every sewer manager. Where exactly are the defects located? How and when can the infrastructure be best replaced?
Will local interventions still help or are you looking at an entire replacement investment? These questions arise when problems occur.
There is however light at the end of the tunnel because preventive maintenance of 20% of the piping infrastructure of a sewer system already avoids 80% of the risks. A structural management therefore offers a huge cost saving.