Lessalt/West Hills Urban Surface Water Supplies for 2017-2019


For More Information
Click Here  
Pajaro River Watershed Integrated Regional Water Management Plan

The IRWM Plan is a collaborative effort led by representatives from San Benito County Water District, Santa Clara Valley Water District, and Pajaro Valley Water Management Agency. The IRWM Plan identifies opportunities for the integrated management of all aspects of water resources in the watershed.

Pajaro River Watershed IRWM Plan Update Public Notice

2007 Pajaro River Watershed IRWM Plan

2010 Pajaro River Watershed IRWM Planning Grant Application

2012 Pajaro IRWMP Project Form

Salt and Nutrient Managment Plan

Pajaro IRWM Grant Update


In an effort to control & eradicate the destructive aquatic mussel, SBCWD has partnered with federal, state, and local government agencies to plan an attack on the invasive species.

For More Information
Click Here

Sustainable Groundwater Management Act

Background – Sustainable Groundwater Management Act (SGMA)

The San Benito County Water District (SBCWD) has long served as the manager of groundwater resources in San Benito County. SBCWD has worked to maintain high-quality groundwater availability throughout the County, with an emphasis on the norther groundwater basins. Recognizing the importance of groundwater to communities like San Benito County, the state legislature enacted the Sustainable Groundwater Management Act of 2014 (SGMA). SGMA provides local water agencies with important new groundwater management tools not previously available for the purpose of achieving sustainable groundwater use.

In order to implement SGMA, the California Department of Water Resources (DWR) has prioritized all of the Designated Groundwater Basins in California as high, medium, low, or very low. In accordance with SGMA, DWR requires the formation of Groundwater Sustainability Agencies (GSAs) that cover the entire basin for all medium and high priority Groundwater Basins. A GSA can be a single agency, or a group of agencies coordinating the sustainable planning and management of the basin.

There are multiple groundwater basins and subbasins in the northern portion of San Benito County. The largest of these are the Bolsa (Basin Number 3-003.02), Hollister Area (3-003.03), and San Juan Bautista Area (3-003.04) Subbasins of the Gilroy-Hollister Basin. These subbasins were all ranked as Medium priority during the initial Basin Prioritization completed by DWR in 2014. The prioritization of the Tres Pinos Valley Basin (3-025) may be changed from Low to Medium priority during the next round of DWR’s reprioritization (to be publicly released May 2018). A change may result in a requirement for a local agency to form a GSA including the Tres Pinos Basin area and then complete a GSP for that area. The SBCWD formed a GSA covering the three subbasins of the Gilroy-Hollister Basin listed above, and has recently notified DWR that this GSA will also take responsibility for the Tres Pinos Basin

Basin Boundary Modifications

Successful groundwater management relies on accurate delineation of groundwater basins. DWR has defined and designated 515 groundwater basins and subbasins in California. However, DWR and SGMA recognize that some of the groundwater basin designations are imperfect and, in some cases, could better support sustainable management with revised boundaries. SGMA includes a process for modifying groundwater basin boundaries from the current official delineations in DWR Bulletin 118. This process allows local agencies to request Basin boundary modifications from DWR, and provides opportunities for public and agency input. In November 2015, DWR finalized regulations for requesting modifications for basin boundaries and subsequently oversaw a successful first round of boundary modifications that ended in early 2016. DWR has opened a second round of basin boundary modification requests that will close May 31, 2018.

Proposed Boundary Modifications

The four current or soon to be medium priority groundwater basins in northern San Benito County will all require the completion of GSPs that meet the requirements of SGMA. These basins are all hydraulically connected and they are all within the jurisdictional area of the SBCWD GSA. Therefore, the SBCWD GSA is requesting that these basins be consolidated into a single new basin named the North San Benito Groundwater Basin.

The basin boundary modification request will document the benefits and need for the creation of the new North San Benito Groundwater Basin. Recognizing the shared jurisdictional and hydrogeologic conditions in the four existing basins, believes that more effective sustainable groundwater management will be achieved if the boundaries between these basins are removed to form a single new basin. The combined external boundaries of the existing basins would remain the same, as would the boundaries between these basins and other adjacent basins. The modified basin boundaries of the new North San Benito Basin will be more consistent with historical and ongoing management of these shared groundwater resources. A map that shows the current and proposed basin boundaries can be accessed here .

Public Notification and Consultation

The SBCWD is closely coordinating with neighboring agencies for this basin boundary modification and other aspects of SGMA compliance. SBCWD is notifying and coordinating with all other affected public water systems regarding this basin boundary modification request. SBCWD also submitted a notification of intent to pursue a basin boundary modification creating the new North San Benito Groundwater Basin to DWR.

In addition, SBCWD has adopted a resolution to submit the package to DWR. Within five working days of DWR acceptance of the request, SBCWD will provide a notification of the submittal to local agencies and public water systems within the affected basin and any person or entity that has made a written request. This notice will include information regarding the procedural requirements and deadlines for public input regarding the basin boundary modification request.

For additional information or to request notifications on the proposed Basin Boundary Modification, please email or submit in writing to the following address:

San Benito County Water District
Attn: Mr. Jeff Cattaneo, District Manager
30 Mansfield Road
Hollister, CA 95023

Copyright © San Benito County Water District, All Rights Reserved.
Web design by Morgan Hill Web Works, Inc.

Sustainable Groundwater Management Act (SGMA)

For More Information
Click Here  

Blue Valve Water Users


For More Information
Click Here  
Hollister Urban Area Water Project

Cooperative Effort Will Boost Quality of Drinking Water

The Hollister Urban Area Water Project (HUAWP) is a collaborative effort under way to deliver high-quality water to help ensure economic stability and contribute to a better quality of life for the entire community.

For More Information
HUA Water Project Link

HUA Water Project Video

HUA Water & Wastewater Master Plan

Hollister Urban Area Master Plan Update July 2017

West Hills Water Treatment Plant Project FEIR