Castlewood water restored after pump failures | October 8, 2021 | Pleasanton Weekly | PleasantonWeekly.com |

Pleasanton Weekly

News - October 8, 2021

Castlewood water restored after pump failures

Community left with depleted supply amid lengthy repairs Sunday

by By Jeremy Walsh

Full water service was returned to Castlewood on Monday morning with repairs completed in the well pump that failed and caused a serious water supply shortage Sunday in the unincorporated neighborhood in southwestern Pleasanton, a San Francisco Public Utilities Commission spokesman said.

On Sunday morning, SFPUC learned that one of its two groundwater well pumps for its Pleasanton well system had failed -- this after the other well was already inactive due to a pump failure one month ago and a replacement part on order, according to SFPUC press secretary Will Reisman said.

The SFPUC-owned system is the sole water source for Castlewood residents.

As a result of the breakdown Sunday, SFPUC, city of Pleasanton and Castlewood Property Owners Association representatives urged Castlewood residents to limit their household water use to essential activities only Sunday as crews worked to temporarily supplement the water system's tanks while also trying to fix the underlying pump problem. The Club at Castlewood stopped irrigation for the day.

Stop-gap strategies on Sunday included trucking in water from SFPUC facilities in the Sunol Valley as well as trying to establish a hook-up connection to a nearby city fire hydrant to pull from the Pleasanton municipal water system.

Crews eventually determined the problem occurred due to the pump and electrical components overheating due to a failed fan inside the machinery, Reisman said. The SFPUC pump was repaired late Sunday night and the Castlewood reservoir was filled just after midnight Monday.

"Our crews were able to repair the pump last night, and the repairs have held. Castlewood Reservoir was filled just past midnight early this morning," Reisman told the Weekly on Monday morning.

"Full water service is available now," Reisman said. "SFPUC will continue to monitor the situation. A new pump has been on order, and should be installed early next month. A replacement for the second pump will soon follow in order to provide redundancy to the system."

Castlewood's water system, which is supplied solely by the SFPUC, is separate from and not connected to the city's potable water system. The city operates and maintains the Castlewood water and sewer systems under contract with the Alameda County Public Works Agency, according to Pamela Ott, deputy city manager for Pleasanton.

The affluent neighborhood and country club community off Foothill Road was left in a serious situation on Sunday with a seriously depleted water supply amid pump failures within the SFPUC-owned well system that serves that area in unincorporated Pleasanton.

SFPUC crews spent most of the day and night on Sunday working to troubleshoot the problem as well as find ways to supplement Castlewood's dwindling water supply.

Approximately 280 Castlewood customers were impacted by the water outage, according to Pamela Ott, deputy city manager for Pleasanton.

Steve Tangney, president of Castlewood POA, provided updates via email to homeowners in Castlewood.

"It is important to continue to limit water usage to the absolute minimum until further notice. As mentioned earlier today, turn off all irrigation and please postpone household usage such as clothes washing and dishwashing," Tangney wrote around 4 p.m. Sunday.

Once the pump was repaired and reservoir filled early Monday, Castlewood residents were advised to boil all of their tap water before potable use for safety reasons until the city of Pleasanton could finish flushing the system that day.

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