Your WaterFlood and Stream ManagementWatershed and Environment
In The Zone


Public Workshop for Patterson Pass Water Treatment Plant Upgrades and Ozonation Project

Zone 7 will be holding a public workshop on June 26, 2018 from 7:00 p.m. to 8:00 p.m. at Patterson Pass Water Treatment Plant located at 8750 Patterson Pass Road, Livermore. Zone 7 invites project neighbors and interested public to attend this meeting to learn more about the project and to ask questions about the proposed design and construction. View the workshop notice.


South Chain of Lakes Study

Starting on April 30, 2018, Zone 7 and the quarry operator, CEMEX, are collaborating on a groundwater study near the intersection of Isabel and Vineyard Avenues at Lakes A and B of the future Chain of Lakes facility. The study will include drilling into the ground near the lakes to collect data on aquifer conditions and soil characteristics. Drilling activities are not expected to impact traffic or trail access, as the drill rig will be within the perimeter of the mining area. The study is expected to last about a month.


 60 year calendarZone 7 Celebrates its 60th Anniversary

To commemorate our 60th anniversary, while also promoting water awareness, Zone 7 Water Agency has created this 18-month (July 2017 - December 2018) calendar. Zone 7 Water Agency, in partnership with local water retailers, invited 4th-grade students within our service area to share their artistic talents by creating a poster that illustrates the importance of water conservation, flood protection, and watershed management. Winners of the poster contest are featured in the calendar. An electronic version of the calendar is now available for download.

Check out our 60th anniversary flyer covering Zone 7's history from 2007 to 2017. Expanding on that, our 60th anniversary booklet covers Zone 7's history from 1957 to 2017.

Also, take a look at the flyer celebrating the 50th anniversary of construction of Lake Del Valle.



California WaterFix Critical for Zone 7 Water Supply

Efforts to restore the Delta ecosystem and improve water reliability for 25 million Californians, including those living in Zone 7's service area, reached a milestone with release of the updated Bay Delta Conservation Plan, a modified preferred alternative and partially recirculated draft environmental review documents. Visit California Water Fix to learn more.

"Living Arroyos" Program

This partnership aims to restore the urban streams and streamside habitats of the Livermore-Amador Valley while continuing to protect drinking water supplies and prevent flooding. To learn more, including about volunteer opportunities, visit our Living Arroyos page.

Water Wise WebsiteWater-Wise Gardening Tips Online!

Tri-Valley Water-Wise Gardening is an interactive website loaded with lots of useful information specifically for Tri-Valley gardeners. It includes photos, a searchable plant database, water-saving tips, and much more!

Zone 7 owns many flood control channels and creeks in the Cities of Livermore, Pleasanton and Dublin, and in unincorporated areas of Eastern Alameda County. If you see a spill or dumping in any waterway, follow the directions below to report it:

  1. If a spill is currently happening, call 911.
  2. If the situation is not urgent, call:
  • Zone 7 Administrative offices at (925) 454-5000 during business hours, Monday-Friday, 8 a.m. to 5 p.m.
  • Water Treatment Plant Operator at (925) 447-6704, ext. 1, during non-business hours.





Board Meetings          
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   1-30-08 (Special Mtg) View    N/A   View
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