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More than half of U.S. drinking water comes from groundwater.

What is Groundwater?

Groundwater is water held beneath the Earth’s surface in the soil or in pores and crevices in rock. It’s a beneficial resource nationally, and within California, as it is used for drinking water by more than 50 percent of the people in the United States, including almost everyone who lives in rural areas. California’s total water supply consists of about 38 percent groundwater, the largest use being crop irrigation.

Managing groundwater is critical. That’s why the state of California passed the Sustainable Groundwater Management Act, which requires the adoption of groundwater management plans to sustain groundwater resources, and assist with maintaining reliable and resilient water supplies throughout California.

California’s total water supply consists of about 38 percent groundwater, the largest use being crop irrigation.

About WPGSA

The West Placer Groundwater Sustainability Agency was formed in 2017 to implement the Sustainable Groundwater Management Act passed in 2014. The Act requires the formation of such agencies to manage local groundwater basins.  Placer County, the cities of Roseville and LincolnPlacer County Water Agency,  Nevada Irrigation District and in participation with the California American Water Company, make up the West Placer Groundwater Sustainability Agency (WPGSA) and manage a portion of the North American Subbasin.

The WPGSA implements activities that preserve and enhance the current state of groundwater for our cities, communities, agriculture and the environment. More specifically, this locally-controlled effort will protect the basin from overdraft, create sustainable water supplies for agriculture and current and future development,  support a stable and growing local economy, and contribute to land and habitat conservation.

The West Placer County group of agencies has been working proactively to manage the region’s groundwater for decades. Some of these agencies have implemented a conjunctive use program (the practice of storing surface water in a groundwater basin in wet years and withdrawing it from the basin in dry years) to balance water supply needs in the region. As a result, the North American Subbasin is very healthy and has been replenished during wet years.

The West Placer County group of agencies has been working proactively to manage the region’s groundwater for decades.

Groundwater Sustainability Plan

In September 2018, the Sacramento Groundwater Authority (one of our North American Subbasin partners) filed the required notification to the state to begin work on the plan for the entire subbasin, which comprises five Groundwater Sustainability Agencies (Agencies). Learn more about the North American Subbasin. The five Agencies are closely coordinating the preparation of a single Plan. The final Plan is slated for completion mid-2021.

GSA Responsibilities

How we are managing the GSA and the plan.

Coordination

The West Placer Groundwater Sustainability Agency will need to coordinate with other local and regional agencies within the basin and neighboring basins subject to the law.

Public Outreach & Stakeholder Engagement

The West Placer Groundwater Sustainability Agency is required to maintain a list of interested stakeholders and engage them during the development and implementation of the Plan.

Plan Development

The Agency will be required to develop and implement a Groundwater Sustainability Plan. If multiple Plans are developed for the same basin, coordination agreements will be required. Learn more about the North American Subbasin.

Monitoring & Reporting

Additional monitoring of groundwater levels, water quality, or subsidence will be needed to track progress toward (or deviation from) meeting the sustainability objectives of the Plan. The California Department of Water Resources will require that the Agency submit annual basin status reports substantiating this progress.

Plan Implementation

The Groundwater Sustainability Plan will be actionable through new authorities and tools intended to achieve groundwater sustainability in a basin within the law’s timeline.

Enforcement

The Agency will need to enforce the provisions adopted in the Plan.

Public Outreach

We want to hear your ideas and concerns, as groundwater users and stakeholders, as we develop the Plan.
Those interested in the development and implementation of the plan as well as to keep updated with groundwater management in West Placer are encouraged to sign up for email notifications (found below).
The partners of WPGSA meet several times throughout the year.  Get the latest meeting materials and summaries here.

Timeline

  • June 2016 through June 2017

    Established the Groundwater Sustainability Agency.

  • June 2016 through January 2020

    Develop a Groundwater Sustainability Plan (GSP).  This plan provides for sustainably managed groundwater that meets the requirements of the state’s new groundwater laws, and outlines how the GSA will implement, manage and measure specific actions for the health and viability of the basins. The agencies are on track to submit the GSP by the due date of January 1, 2022. Read the Notice of Intent to develop the GSP.

  • January 2020

    Begin management of Groundwater Sustainability Plan.

Stay Informed

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