California 2025-2026 Regular Session

California Assembly Bill AB93

Introduced
1/7/25  
Refer
3/24/25  
Report Pass
3/24/25  
Refer
3/25/25  
Report Pass
4/9/25  
Refer
4/21/25  
Report Pass
5/1/25  
Refer
5/6/25  
Refer
5/14/25  
Report Pass
5/23/25  
Engrossed
5/29/25  
Refer
5/29/25  
Refer
6/11/25  
Report Pass
6/24/25  
Refer
6/24/25  
Report Pass
7/9/25  
Refer
7/9/25  
Report Pass
7/16/25  
Refer
7/17/25  
Refer
8/18/25  
Report Pass
8/29/25  
Enrolled
9/11/25  

Caption

Water resources: data centers.

Impact

The legislation is set to impose new requirements on data centers, categorizing them as commercial, industrial, and institutional water users under the state's conservation regulations. By establishing a framework for self-certification and reporting, AB93 aims to ensure greater accountability and resource efficiency among data center operators. The bill is framed as a statewide measure rather than a municipal one, meaning it will apply uniformly across all Californian cities, including charter cities, without a mandate for local reimbursement of implementation costs. This approach is intended to facilitate water conservation statewide, recognizing its significance as a matter of public concern.

Summary

Assembly Bill 93 (AB93), introduced by Assembly Member Papan, focuses on enhancing the regulation of water use by data centers in California. The bill mandates that before applying for a business license or permit from a city or county, data center operators must provide an estimate of their expected water use to their water supplier under penalty of perjury. Additionally, for renewals of such licenses, operators must submit an annual water use report. This initiative reflects a response to the escalating demand for water and energy resources driven by the growth of data centers, aiming to align operational needs with sustainability objectives.

Sentiment

The general sentiment surrounding AB93 appears to be supportive, especially in light of California's ongoing water sustainability challenges. Advocates of the bill argue that it presents a necessary regulatory response to the operational demands of data centers while promoting efficient water use. However, some may express concerns regarding the adequacy of these measures for sufficiently addressing the environmental impacts associated with data center operations. The discussion around the bill is underscored by a shared awareness of the need to balance economic activity with resource conservation efforts.

Contention

Notable points of contention might arise concerning the bill's implications for business operations, as data center owners might view the additional regulatory burdens as restrictive. The enforcement of self-certification under perjury adds a layer of legal accountability that could potentially deter some operators from entering or continuing in the market. Moreover, the challenge of ensuring compliance with efficiency guidelines and best practices once developed by the Department of Water Resources may lead to discussions about the practicalities of monitoring and enforcing these new standards.

Companion Bills

No companion bills found.

Previously Filed As

CA AB122

Public resources trailer bill.

CA SB122

Public resources trailer bill.

CA AB156

Public resources: omnibus budget trailer bill.

CA SB156

Public resources: omnibus budget trailer bill.

CA AB460

State Water Resources Control Board: water rights and usage: civil penalties.

CA SB231

Department of Water Resources: water supply forecasting.

CA AB1337

State Water Resources Control Board: water diversion curtailment.

CA AB1526

Public resources.

CA AB1572

Potable water: nonfunctional turf.

CA AB1272

State Water Resources Control Board: drought planning.

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