"The key trouble spots are well known to local people, so let's focus on those."
Chief executive Steve Hill said the current system was "reactive" as there were insufficient resources to inspect the entire network on a rolling programme.
The service request system was the most affordable for the council, although it could also be "smarter" about the way it targeted inspections and repairs, Mr Hill added.
Mayor Bryan Cadogan said the message he had received from recent long-term plan "soapbox" sessions across the district had been: "Let's get the service request system working effectively."
Mr Hill said staff were already looking at the issue, which the council could expect to figure prominently among ratepayer submissions to its long-term plan, closing on May 11.