Bay Area Water Demand Reduction and Supply Monitor
This water demand reduction and supply monitor was developed by the Bay Area Regional Reliability (BARR) Partnership, a collaboration of eight Bay Area water agencies working together to improve regional water supply reliability.
A map of the demand reduction actions for each Bay Area agency/supplier is shown below to provide information on the calls for voluntary or mandatory water use reduction.
Bay Area water providers regularly monitor supply conditions to inform water management actions, as described in the BARR Drought Contingency Plan. The water supply map below reflects supply conditions for individual BARR agencies and some water suppliers in the North Bay Area as of July 2023, based on Water Shortage Contingency Plan (WSCP) stages defined in Senate Bill (SB) 606—i.e., supply thresholds/triggers and associated actions, unique to each agency. Lower stages indicate less risk of a shortage, while higher stages indicate shortages of varying degrees.
The water demand reduction and supply conditions maps are updated at least once a year and represent a snapshot in time, but agencies regularly monitor their supplies and update their individual websites (linked below) to reflect current conditions and calls for voluntary or mandatory demand reductions.
- Alameda County Water District (ACWD): acwd.org
- Bay Area Water Supply and Conservation Agency (BAWSCA): bawsca.org
- Contra Costa Water District (CCWD): ccwater.com
- East Bay Municipal Utility District (EBMUD), ebmud.com/water-and-drought/about-your-water/water-supply/
- Marin Municipal Water District (MMWD): marinwater.org
- San Francisco Public Utilities Commission (SFPUC): sfwater.org
- Valley Water: valleywater.org/your-water/water-supply-planning/monthly-water-tracker
- Zone 7 Water Agency: zone7waterca.gov
- City of Napa: cityofnapa.org/water
- Solano County Water Agency (SCWA): scwa2.com/water-supply
Bay Area Water Demand Reduction and Supply Status as of August 4, 2026
|
Water Agency/ Supplier |
Demand Reduction Actions |
State’s Water Shortage Levels as Defined in SB 606 |
Comments |
|
|
ACWD |
No demand reductions |
No shortage |
There has been no change since April 11, 2023, when the ACWD Board of Directors voted unanimously to rescind its water shortage emergency ordinance. ACWD continues water use efficiency efforts in the Tri-Cities to help ensure long-term water supply reliability for its customers. For more information, visit https://acwd.org/133/Water-Conservation. |
|
|
BAWSCA |
No demand reductions |
No shortage |
There has been no change since April 11, 2023 when the SFPUC rescinded its local water shortage emergency. |
|
|
CCWD |
No demand reductions |
No shortage |
CCWD continues to encourage its customers to use water wisely and has permanent prohibitions against wasteful water use – for more details, please visit Water Efficiency | Contra Costa Water District, CA (ccwater.com). |
|
|
EBMUD |
No demand reductions |
No shortage |
|
|
|
MMWD |
No demand reductions |
No shortage |
Reservoir storage started the water year at high levels and remained above average through winter months due to conservation, wet weather, and MMWD’s operational strategy, including maximizing purchases of Sonoma Water supplemental water in the late summer and early fall. Despite current healthy reservoir supplies, Marin Water recognizes that drought will continue to be a regular occurrence in California. Therefore, Marin Water is continuing work to strengthen our water supply resiliency, focusing on projects that will improve and expand our existing storage while also working to develop new supplies to be better positioned to weather future periods of extended drought. |
|
|
SFPUC |
No demand reductions |
No shortage |
There has been no change since April of 2023 when the SFPUC rescinded its local water shortage emergency. |
|
|
Valley Water |
15% Voluntary water use reduction |
No shortage |
There has been no change since April 11, 2023, when Valley Water Board of Directors ended its water shortage emergency and replaced the mandatory call to reduce water use with a voluntary call for 15% water conservation. On June 13, 2023, Valley Water Board adopted a resolution to support water conservation as a way of life and an ordinance with a set of permanent water waste prohibitions for Santa Clara County. More information can be found at Water Conservation Programs. |
|
|
Zone 7 Water Agency |
5% voluntary water use reduction |
No shortage |
There has been no change since April 19, 2023, when the Zone 7 Board of Directors declared the end of the drought emergency to its service area. Zone 7 Water Agency is committed to water conservation and is encouraging voluntary 5% conservation within its service area. Please visit https://www.zone7waterca.gov/conservation-rebates for more information. |
|
|
City of Napa |
No demand reductions |
No shortage |
There has been no change since April 18, 2023, when Napa City Council terminated a two year moderate water shortage emergency. With two local reservoirs filling for the third straight winter and sufficient imported supplies available from the State Water Project, no shortage is anticipated. Permanent water conservation regulations remain in place which prohibit wasteful practices and encourage efficiency even during non-drought periods. The City of Napa recognizes the volatility of California’s climate and is committed to “Making Water Conservation a Way of Life” and meeting its SB 606/AB 1668 Urban Water Use Objective. Please contact Joy Eldredge at jeldredge@cityofnapa.org for questions. |
|
|
SCWA |
No demand reductions |
No shortage |
Reservoir levels have remained in good condition since 2023. However, many cities within the service area of Solano County Water Agency have retained voluntary or permanent water waste restrictions in an effort to maintain consistent water efficiency behaviors. The City of Benicia experienced significant damage to a drinking water transmission line in 2025, resulting in an emergency 40% temporary reduction rate. |
Team Members
