2024 Annual Report
Flood Master Plan
Chain of Lakes PFAS Treatment Facility
Water Academy
Apply for our Water-Efficient Lawn Conversion Rebate today!
Smart Irrigation Rebate
High Efficiency Water Rebate
Pool Cover Rebate
Tri-Valley Solutions

Delivering the highest standard of water quality, reliability and safety.

As the Tri-Valley region’s water wholesaler, we work with our water retailers to ensure the people of eastern Alameda County are taken care of.

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How We Serve You

Water Quality

Our water meets not only state and federal health standards, it outperforms many of them – which inspired us to create the more stringent Zone 7 standards.

Water Reliability

We are continually working to secure our water supply – even in our ever-changing environment of water rights and availability.

Flood Protection

We are continuously improving our level of preparedness and resiliency in managing our watershed to protect the Tri Valley community from flooding.

Meeting Agendas

Agendas

Water Resources Committee Meeting

May 1, 2025

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Agendas

Regular Board Meeting

April 16, 2025

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Meeting Agendas

News & Updates

Zone 7 Opens Chain of Lakes PFAS Treatment Facility

Largest facility of its kind in Northern California will remove PFAS from groundwater

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All News & Updates

Meetings and Events

Public Events

Ag & Enviro Adventure Day

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Featured Video

Where in the world does your water come from?

Where in the world does your water come from?

Storm Alert: Outlook

Currently, there is no known risk. Zone 7 is monitoring weather conditions. 

Stay ready for flood season by making sure you are prepared ahead of time. You can get more flood preparedness tips and resources at zone7water.com/preparedness.

Flood Safety Tips

Educating Future Generations

Check out our educational resources curriculum for first through eighth grades and learn about new and ongoing initiatives to further improve water quality.

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