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In The Zone


Comment Period Extended for Arroyo Mocho Medeiros Parkway Project

To provide the public additional time for review and input, Zone 7 is extending the public comment period by two weeks for its Arroyo Mocho Medeiros Reach Floodplain and Riparian Restoration Project to June 8, 2018. Input during the public comment period is a critical component of the CEQA process, as it helps to inform and refine the proposed project. As the public has reviewed the document, more questions and concerns have been posed. Extending the comment period will allow the community more time to review the project and provide input. Read the press release.


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.





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