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New Surface Water to Start Flowing for All Remaining Areas

The Surface Water Project is ahead of schedule. By mid-October, all Davis residents will be integrated into the new surface water system.

In 2015, the City of Davis began construction of an eight-mile water pipeline connecting the City’s water system to the Woodland-Davis Clean Water Agency’s system. The joint pipeline system transports water from the Sacramento River to the Regional Water Treatment Plant in Woodland and deliver the new surface water to residents and businesses in Davis, Woodland, and UC Davis.

The project is now in its final stage. Phase 1, Central Davis customers, started receiving the new water in June.  Phase 2, which includes the remaining areas of East Davis, will start receiving the new water on September 28th. Phase 3, which includes West & South Davis, were scheduled for December. Phase 2, South Davis customers, will start receiving water on October 5 and West Davis customers the week of October 10. These dates are approximate and subject to change. It will take approximately two weeks for surface water to be fully distributed to Phases 2 & 3.

Surface Water Distribution Rev 2016-09-26
View a PDF version of this map.

Timing updates will be posted on CityofDavis.org and Nextdoor.

"The entire City Council is gratified that this project is ahead of schedule," said Davis Mayor Robb Davis. "The City and the Contractor have been working diligently to ensure integration of the new surface water throughout Davis. We are near our goal of no longer needing to rely solely on groundwater for our water supply, we now have improved water quality and the diversified sourcing of our water creates a more resilient water supply system going forward."

The City has been preparing for this new water source by building water transmission pipelines, flushing the existing distribution system to remove build up sediment and treating them to prevent corrosion. Groundwater will still be used as necessary during higher demand periods. In most cases, it will be blended with surface water before being delivered to customers.

At surface delivery startup, water may appear temporarily cloudy when it first comes from the tap as a result of air bubbles. However, should your household experience any brown water during the startup phase, run the water at the hose bib at the front of the house for about 30 seconds at a high volume. This should clear the line from the water meter to the first valve. Once the water looks clear, turn off the hose and then run cold water in a bathtub at high volume. This should direct any remaining brown water out of the inside lines.

The new surface water is naturally softer than local groundwater. It will result in less wear and tear on water using appliances, and requires less soap/detergent for washing purposes. Once full integration of surface water occurs the typical hardness of water throughout the city, based on water quality modeling, will be between 60 and 120 mg/L or a maximum of 7 grains per gallon. The City is recommending residents bypass their water softener once surface water is fully integrated and see if the level of hardness is acceptable. If the preference of a resident is to keep a softener active, then at a minimum, the grains per gallon setting should be reduced to an appropriate level (no more than 7 gpg in most cases).

Please call Public Works Department at 530-757-5686 during regular business hours, Monday through Friday from 8:00 a.m. to 5:00 p.m. with any questions or concerns. After hours, or if unable to reach Public Works during normal business hours, call the non-emergency Police Dispatch number, 530-747-5400 and they will ensure your issue is addressed by Public Works staff.

Additional surface water information may be found at http://www.cityofdavis.org/city-hall/public-works/water/davis-water-quality-improvement-project

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