Thus it appears that engineers are investigating at least two separate issues: bolts that connect the mains and shut-off boxes that are placed between the street and the residence.
City officials say they have been reviewing the work of the design and construction companies that created the intricate system, which cost about $22.9 million. Past contractors would include Camp, Dresser and McKee, Inc., of Cambridge, and D & C Construction Co. in Rockland. Both companies are still in business.
Municipal leaders have also been working with “high-level state agencies with legal clout.” City officials stress that because there might be litigation, they do not want to talk about specifics of the situation.
It appears that much of the day-to-day investigation has been run through the mayor’s office. On Saturday, Holaday brought councilors up to speed on the city’s efforts to identify the cause of problems and a solution to fix them.
In the meantime, “The system is 100 percent safe and operational,” Holaday said. “We are monitoring it and will continue to do so.”