Stewardship

Zone 7 is more than pipes, pumps, and rates. It is the groundwater basin manager for the Livermore Valley, the steward of 37 miles of arroyos across eastern Alameda County, and the direct water supplier for thousands of acres of South Livermore vineyards. That watershed is what lets Tri-Valley residents, vineyards, wetland habitat along the Pacific Flyway, and local employers all function in the same valley. A board that treats them as one system makes better decisions for all of them.

Groundwater basin stewardship

Zone 7 is the exclusive Groundwater Sustainability Agency for the Livermore Valley Groundwater Basin under California's Sustainable Groundwater Management Act of 2014. The Salt Management Plan, adopted in 2004, manages total dissolved solids in the basin. The Nutrient Management Plan (2015) handles nitrate. Together, these are the concrete tools the board votes on to protect basin water quality for wells, recharge, and every user that draws on the same aquifer.

DWR approved Zone 7's Alternative Groundwater Sustainability Plan in 2019 and approved the five-year update on June 27, 2024. The next update is due in 2026, which means the next board will vote on a plan that governs basin sustainability for the following five years. That plan, and the Annual Reports that support it, deserve the same public milestones and audit trails as any capital project.

Local agriculture and the Livermore Valley wine industry

Zone 7 directly supplies untreated water to 74 agricultural customers on roughly 3,500 acres, primarily South Livermore Valley vineyards. That is a direct rate-and-reliability relationship, not an abstraction. The 2024 Alameda County Crop Report shows Livermore winegrape gross value at $18.3 million across 3,381 bearing acres, down 21 percent from 2023, with the agricultural commissioner citing saturated markets and changing consumer trends.

An industry under that kind of pressure needs predictable water, a clear rate structure, and a dry-year allocation framework that gives ag a real answer. The Salt Management Plan protects basin water quality for recharge-fed vineyard wells. Recycled water coordination with DSRSD and the City of Livermore supports landscape and salinity-compatible vineyard irrigation and offsets potable demand in drought. Those are Zone 7 board decisions.

Arroyos as habitat and flood control

Zone 7 maintains 37 miles of flood-protection channels across the Tri-Valley. The Arroyo del Valle, Arroyo Mocho, and Arroyo Las Positas do double duty: they move storm flows away from homes and employers, and their riparian corridors support native fish, migratory waterfowl on the Pacific Flyway, and resident species. The Living Arroyos program, a Zone 7 partnership with the Alameda County Resource Conservation District, is the existing mechanism for riparian restoration along these channels.

Every flood capital line should be scored on both flood performance and habitat outcomes, with the numbers in front of the board and the community before the vote. The Chain of Lakes project, which converts former gravel pits into an interconnected surface system, is the same kind of infrastructure: seasonal bird use and habitat edge can be designed in at the planning stage or left out. A board member who asks the habitat question as a matter of routine is not distracted from water supply; that board member is recognizing that the watershed is one system.

Recycled water and the reliability portfolio

Recycled water is the part of the reliability portfolio that most directly touches landscape, vineyard, and commercial irrigation customers. Zone 7 coordinates with DSRSD and the City of Livermore on recycled-water expansion and has room to do more. Every acre-foot of recycled demand is an acre-foot of potable supply that stays in the system during drought.

The Tri-Valley employer base

Tri-Valley employers do not relocate for tax rates alone. They evaluate reliability, water quality, and the predictability of the approval pipeline. Pleasanton's life-science cluster, the Dublin and Livermore technology and data-center footprint, and the Lawrence Livermore National Laboratory supply chain all depend on predictable wholesale water. PFAS treatment protects tolerances beyond federal minimums that food and beverage processors, wineries, and labs all rely on. A rate-predictable, drought-resilient, new-connection-capable Zone 7 is an economic development asset, not a cost center.

One watershed

The watershed Zone 7 manages for drinking water, the watershed the Livermore Valley wine industry depends on, the watershed the Pacific Flyway relies on, and the watershed Tri-Valley employers plan around are the same watershed. Every board vote on Delta Conveyance, on the Chain of Lakes, on flood capital, on the Salt Management Plan milestones, and on recycled-water partnerships affects all of them. Treating them as connected is not a distraction from the core mandate. It is the core mandate.