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AB 93
Water resources: data centers.
Assembly · Environment
What this bill does
This bill would require a person who owns or operates a data center, prior to applying to a city or a county for an initial business license, equivalent instrument, or permit, to provide its water supplier, under penalty of perjury, an estimate of the expected water use. When applying to a city or county for an initial business license, the bill would require a person who owns or operates a data center to self-certify, under penalty of perjury, on the application that the person has provided its water supplier an estimate of the expected water use. …
Read the full official summary
Existing law authorizes the legislative body of an incorporated city and the county board of supervisors to license businesses carried on within their respective jurisdictions and to set license fees, as specified.
This bill would require a person who owns or operates a data center, prior to applying to a city or a county for an initial business license, equivalent instrument, or permit, to provide its water supplier, under penalty of perjury, an estimate of the expected water use. When applying to a city or county for an initial business license, the bill would require a person who owns or operates a data center to self-certify, under penalty of perjury, on the application that the person has provided its water supplier an estimate of the expected water use. When applying to a city or county for a renewal of a business license, equivalent instrument, or permit, the bill would require a person who owns or operates a data center to self-certify, under penalty of perjury, on the application, that they have provided the data center's water supplier with a report of the annual water use. By expanding the crime of perjury, the bill would impose a state-mandated local program. The bill would authorize the Department of Water Resources, as part of any efficiency standard adopted under a specified provision of law, to identify different tiers of data centers, based on factors affecting water consumption, and appropriate standards for each data tier. The bill would define terms for purposes of these provisions.
The bill would include findings that changes proposed by this bill address a matter of statewide concern rather than a municipal affair and, therefore, apply to all cities, including charter cities.
The California Constitution requires the state to reimburse local agencies and school districts for certain costs mandated by the state. Statutory provisions establish procedures for making that reimbursement.
This bill would provide that no reimbursement is required by this act for a specified reason.
Official summary from the Legislative Counsel’s office, via OpenStates.
Floor votes (3)
May 29, 2025 — Third reading vote
Passed · 51 yes · 14 no · 14 other
Yes (51): Dawn Addis, Cecilia Aguiar-Curry, Patrick Ahrens, Joaquin Arambula, Rebecca Bauer-Kahan, Steve Bennett, Marc Berman, Blanca Rubio, Tasha Boerner, Mia Bonta, Lisa Calderon, Jessica Caloza, Juan Carrillo, Celeste Rodriguez, Damon Connolly, Sade Elhawary, Mike Fong, Jesse Gabriel, Robert Garcia, Mike Gipson, Matt Haney, John Harabedian, Gregg Hart, Jacqui Irwin, Corey Jackson, Ash Kalra, Maggy Krell, Alex Lee, Josh Lowenthal, Ali Macedo, Mark González, Tina McKinnor, Michelle Rodriguez, Al Muratsuchi, Liz Ortega, Blanca Pacheco, Diane Papan, Gail Pellerin, Cottie Petrie-Norris, Sharon Quirk-Silva, James Ramos, Rhodesia Ransom, Robert Rivas, Chris Rogers, Pilar Schiavo, Nick Schultz, Catherine Stefani, Avelino Valencia, Buffy Wicks, Lori Wilson, Rick Zbur
No (14): Juan Alanis, Leticia Castillo, Laurie Davies, Carl DeMaio, Diane Dixon, Stan Ellis, Heath Flora, Heather Hadwick, Joshua Hoover, Jeff Gonzalez, Tom Lackey, Joe Patterson, Kate Sanchez, Greg Wallis
Other / no vote recorded (14): David Alvarez, Jasmeet Bains, Isaac Bryan, Phillip Chen, James Gallagher, Stephanie Nguyen, Darsh Patel, LaShae Sharp-Collins, José Solache, Esmeralda Soria, Tri Ta, David Tangipa, Chris Ward, Anamarie Ávila Farías
Official motion wording
AB 93 Papan Assembly Third Reading
Official record: leginfo.legislature.ca.gov
September 10, 2025 — Third reading vote
Passed · 30 yes · 10 no
Yes (30): Ben Allen, Bob Archuleta, Jesse Arreguín, Angelique Ashby, Josh Becker, Catherine Blakespear, Christopher Cabaldon, Anna Caballero, Sabrina Cervantes, Dave Cortese, María Elena Durazo, Lena Gonzalez, Tim Grayson, Melissa Hurtado, John Laird, Monique Limón, Mike McGuire, Jerry McNerney, Caroline Menjivar, Steve Padilla, Sasha Pérez, Eloise Reyes, Laura Richardson, Susan Rubio, Lola Smallwood-Cuevas, Henry Stern, Tom Umberg, Aisha Wahab, Akilah Weber Pierson, Scott Wiener
No (10): Marie Alvarado-Gil, Steve Choi, Megan Dahle, Shannon Grove, Brian Jones, Roger Niello, Rosilicie Ochoa Bogh, Kelly Seyarto, Tony Strickland, Suzette Valladares
Official motion wording
3rd Reading AB93 Papan By Laird
Official record: leginfo.legislature.ca.gov
September 11, 2025 — Concurrence vote
Passed · 59 yes · 16 no · 5 other
Yes (59): Dawn Addis, Cecilia Aguiar-Curry, Patrick Ahrens, David Alvarez, Joaquin Arambula, Rebecca Bauer-Kahan, Steve Bennett, Marc Berman, Blanca Rubio, Tasha Boerner, Mia Bonta, Isaac Bryan, Lisa Calderon, Jessica Caloza, Juan Carrillo, Celeste Rodriguez, Damon Connolly, Sade Elhawary, Mike Fong, Jesse Gabriel, Robert Garcia, Mike Gipson, Matt Haney, John Harabedian, Gregg Hart, Jacqui Irwin, Ash Kalra, Maggy Krell, Alex Lee, Josh Lowenthal, Ali Macedo, Mark González, Tina McKinnor, Michelle Rodriguez, Al Muratsuchi, Stephanie Nguyen, Liz Ortega, Blanca Pacheco, Diane Papan, Darsh Patel, Gail Pellerin, Cottie Petrie-Norris, Sharon Quirk-Silva, James Ramos, Rhodesia Ransom, Robert Rivas, Chris Rogers, Pilar Schiavo, Nick Schultz, LaShae Sharp-Collins, José Solache, Esmeralda Soria, Catherine Stefani, Avelino Valencia, Chris Ward, Buffy Wicks, Lori Wilson, Rick Zbur, Anamarie Ávila Farías
No (16): Juan Alanis, Leticia Castillo, Laurie Davies, Carl DeMaio, Diane Dixon, Stan Ellis, Heath Flora, Heather Hadwick, Joshua Hoover, Jeff Gonzalez, Natasha Johnson, Tom Lackey, Joe Patterson, Kate Sanchez, Tri Ta, Greg Wallis
Other / no vote recorded (5): Jasmeet Bains, Phillip Chen, James Gallagher, Corey Jackson, David Tangipa
Official motion wording
AB 93 Papan Concurrence in Senate Amendments
Official record: leginfo.legislature.ca.gov