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Wastewater Diversion Project
Posted on 12/21/2018
Pump Station Location

Wastewater Diversion Project

On Wednesday, December 12th, staff from the Dublin San Ramon Services District (DSRSD), East Bay Municipal Utility District (EBMUD), and Central Contra Costa Sanitary District (CCCSD) held an open house meeting with residents of San Ramon regarding a potential wastewater diversion and recycled water project.  This was the next step to gather resident input after presenting this potential project to the City Council on November 13, 2018.

Approximately 2,400 mailers were sent out to residents in the area, and 12 residents participated in the meeting.  DSRSD, EBMUD, and CCCSD staff provided information and answered questions about DSRSD-EBMUD Water Authority’s (DERWA) desire to temporarily divert a small portion of wastewater from the Larwin Pump Station to its water recycling plant to produce more recycled water for irrigation needs in San Ramon.  The additional recycled water would benefit parks, roadway medians, golf courses, and school parks in San Ramon during peak summer demands.

Based on the comment cards, feedback from residents who attended the meeting was generally positive and saw the project as a benefit.
  Some residents brought up concerns about the project, based on their experience with the sewer spill that occurred in 2004.  A few residents requested follow up meetings and additional communication and outreach.

CCCSD staff plans to update their Board at their meeting in January.  Engineering staff will continue to coordinate with DSRSD, EBMUD and CCCSD staff on the project, if it moves forward, and will provide updates to Council as well if there are additional public meetings.

In order to make this happen, CCCSD would construct a 6 x 6 ft. concrete vault, located underground, and approximately 80 additional feet of diversion in the vicinity of the Larwin Pump Station (see below).  Construction would take approximately 4-6 weeks, with no disruption to the Iron Horse Trail or neighboring streets.