Emergency plans of California Water Service Co.'s Bear Gulch District have been tested since Monday, Jan. 25, when an afternoon surge in water pressure resulted in six nearly simultaneous small water main leaks. The pressure surge was caused by a malfunction in the pressure-reducing valve, the company said.
The company worked through the night to repair those leaks only to have more leaks appear Tuesday morning, including one that affected Everest Public High School in North Fair Oaks.
"We did need to temporarily interrupt water service to some customers in order to make the repairs," Ms. Kingman said, but fewer than 100 customers were affected by Monday's leaks and fewer than 40 by the new leaks reported Tuesday.
"The faulty equipment has been isolated from the system, and we will be working to prevent similar occurrences in the future," Ms. Kingman said.
CalWater crews thought all the repairs had been completed by 2 a.m. Tuesday morning, she said, but more leaks were found later in the morning, and the district reopened its emergency operations center.
Two Menlo Park leaks at Roble Avenue and University Drive and at Felton Drive and Encinal Avenue were temporarily repaired Monday night, but crews went back Tuesday morning to finish the work, she said. Customers in those two locations will have their water turned off again, she said.
At the Everest charter high school, at 455 Fifth Ave. in North Fair Oaks, the water district provided bottled water and portable toilets so the school could remain open, Ms. Kingman said. A temporary connection allowed water to be restored to the school by 10:30 a.m., she said.
CalWater, she pointed out, tries to warn customers when service will be interrupted and will deliver bottled water to affected customers or reimburse them for the expense of purchased water.
Monday's leaks were near the following intersections: Euclid and Stockbridge avenues, Atherton; Fifth Avenue and Middlefield Road, North Fair Oaks; First Street and Williams Avenue, North Fair Oaks; Roble Avenue and University Drive, Menlo Park; Felton Drive and Encinal Avenue, Menlo Park; and Fremont Street and Fremont Place, Menlo Park.
Tuesday's leaks were on Fifth Avenue between Park Road and Middlefield Road in North Fair Oaks; on Stockbridge Avenue between Santa Clara Avenue and Hillary Lane in Atherton; and on University Drive between Partridge and Cambridge avenues in Menlo Park.
All but two of the leaks were repaired by 2:30 p.m. and the company expected to have the remaining leaks repaired by early evening, Ms. Kingman said.
For more information, contact the district at (650) 561-9709.
"We're working diligently to make repairs and get water service restored to all impacted customers," Ms. Kingman said. "We are also investigating the problem to ensure we can prevent it from happening again in the future. And finally, we sincerely apologize to our affected customers for any inconvenience this has caused to them."