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Sue Stephenson
Community Affairs Supervisor
(925) 875-2295 office
(925) 570-5739 cell

Renee Olsen
Community Affairs Specialist
(925) 875-2294 office

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Water Recycling Plant Improvements

Post Date:06/27/2017 2:50 p.m.

Demand for recycled water is growing. DSRSD, EBMUD, and the City of Pleasanton are investing over $18 million to increase water recycling capacity.

Situation: Large green spaces in Dublin, San Ramon, and Pleasanton soaked up a record 8.6 million gallons of recycled water on a single sweltering day in July 2016. With more customers connecting to the recycled water distribution system all the time, peak demand on hot summer days is expected to nearly double by 2020.

Solution: An $18 million improvement project is underway that will boost water recycling capacity from 9.7 million to 16.2 million gallons per day. Construction at the Jeffrey G. Hansen Water Recycling Plant began in January 2017 and will be completed in 2018.

  Time-lapse video of construction equipment and workers

Click the image above to watch a time-lapse video of the first four months of construction at the Jeffrey G. Hansen Water Recycling Plant. Workers created a water-tight area in the corner of a holding basin and built a platform for a pretreatment system that will boost water recycling capacity.

Water Recycling is Resource Recovery

The water recycling process applies tertiary treatment and ultraviolet disinfection to secondary effluent (wastewater that has undergone primary and secondary treatment). After improvements are done, the water recycling plant will be equipped to efficiently treat more of the secondary effluent produced at DSRSD's facility next door.

Construction has been carefully planned to minimize impacts on customers. Work that reduces recycling capacity will be done when demand for irrigation water is low. Large irrigation customers will be notified of unavoidable interruptions in the recycled water supply so they can adjust irrigation schedules.

Regional Investment in a Reliable Water Supply

DSRSD and East Bay Municipal Utility District (EBMUD) partnered in building the facility more than a decade ago. As a result of agreements to share and expand this valuable local resource, now the plant also supplies recycled water to the City of Pleasanton. DSRSD operates the water recycling plant and the backbone distribution system on behalf of the partnership and also is overseeing construction.

Including design work already completed, the project’s total cost is $18.2 million. The three agencies will share costs proportionate to the amounts of recycled water they supply to their customers: DSRSD 46 percent and EBMUD and Pleasanton 27 percent each. The partnership received a $150,000 federal grant for the project’s feasibility study and has applied for $3 million in federal matching funds to reimburse a portion of construction costs.

C. Overaa & Co. (Richmond, CA) was awarded the $13.37 million construction contract. Additional contracts were awarded to The Covello Group (Walnut Creek, CA) for construction management ($1.07 million) and Carollo Engineers (Walnut Creek, CA) for engineering services during construction ($0.7 million). For more information, contact project manager Robyn Mutobe, (925) 875-2250.

Go to YouTube to watch time-lapse video of construction
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