2024 Annual Consumer Confidence Report Confirms High Quality of Zone 7 Water

Zone 7 drinking water performed significantly better than the required state and federal health standards during 2024.

News Release

LIVERMORE, Calif. (June 27, 2025) – Zone 7 Water Agency released its 2024 Consumer Confidence Report (CCR), also known as the Annual Water Quality Report, confirming all drinking water supplied by the agency in 2024 met the regulatory standards set by the state and federal governments. Furthermore, in almost all cases, the water quality was significantly better than required regulatory standards.

“We encourage every Tri-Valley resident and business to explore our new Water Quality Report. It’s an opportunity to see firsthand how Zone 7 meticulously ensures the safety and quality of your drinking water.” General Manager Valerie Pryor emphasizes, “We’ve strategically invested in advanced monitoring and treatment technologies, alongside securing millions in grant dollars for crucial facility upgrades. Zone 7 prioritizes more than standards and compliance – we are proactively building a resilient and high-quality water system for generations to come.”

The latest Water Quality Report on Tri-Valley water quality is now available online for residents! Residents can now dive deep into the details of their local water—from its sources and treatment to safety and testing—presented with easy-to-understand graphs and infographics.

The Annual Consumer Confidence Report is available for download through the Zone 7 website, https://www.zone7water.com/post/annual-water-quality-reports.

Some highlights of 2024 Annual Water Quality Report include:

  • Detailed Water Quality Assurance: This year’s report confirms that all water supplied by Zone 7 in 2024 consistently met stringent state and federal regulatory standards for drinking water safety.
  • Insights into Water Sources: Discover the diverse origins of your water supply, including how Sierra Nevada snowmelt travels via the State Water Project, the role of local surface water from Lake Del Valle, and the contribution of groundwater from the Livermore-Amador Valley aquifer.
  • Proactive PFAS Management Updates: Learn about Zone 7’s ongoing efforts to manage PFAS compounds, including the operation of new Ion Exchange (IX) treatment facilities at the Stoneridge Well and Chain of Lakes facilities.

Zone 7 delivers treated drinking water to four major water retailers, along with a small number of direct customers, serving over a quarter million people in Pleasanton, Livermore, Dublin, and the Dougherty Valley area of San Ramon. Zone 7 also provides untreated water to local agricultural users and owns and maintains 37 miles of local flood-protection channels, about a third of all the Valley’s channels and creeks.
Additional questions on water quality may be directed to the Zone 7 water quality team at waterquality@zone7water.com.