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    AB-93
    Natural Resources & Water

    Water resources: data centers.

    Enrolled
    CA
    ∙
    2025-2026 Regular Session
    1
    0
    Track
    Track

    Key Takeaways

    • Requires data centers to report expected water usage to suppliers before obtaining business licenses.
    • Mandates annual water use reporting to suppliers for all data center license renewals.
    • Authorizes the Department of Water Resources to establish tiered efficiency standards for data centers.
    • Enforces compliance through self-certification under penalty of perjury.

    Summary

    Assembly Member Papan's data center water monitoring legislation establishes new reporting requirements for facilities that house information technology equipment, requiring operators to submit water usage estimates and annual consumption data to their water suppliers as a condition of business licensing.

    The bill creates parallel requirements for city and county jurisdictions, defining data centers as facilities that house IT equipment consuming more than 10 kilowatts and 20 watts per square foot of conditioned floor area. Before obtaining an initial business license or permit, operators must provide their water supplier with projected water consumption estimates. License renewals require submission of annual water usage reports. Operators must certify compliance with these requirements under penalty of perjury during the licensing process.

    The Department of Water Resources receives authority to develop tiered efficiency standards for data centers based on water consumption patterns. The legislation designates both urban water suppliers and community water systems as eligible recipients of the usage data. The requirements apply uniformly across California, including charter cities, as the bill's findings declare water conservation a matter of statewide concern rather than a municipal affair.

    Key Dates

    Vote on Assembly Floor
    Assembly Floor
    Vote on Assembly Floor
    AB 93 Papan Concurrence in Senate Amendments
    Vote on Senate Floor
    Senate Floor
    Vote on Senate Floor
    Assembly 3rd Reading AB93 Papan By Laird
    Senate Appropriations Hearing
    Senate Committee
    Senate Appropriations Hearing
    Do pass as amended
    Senate Appropriations Hearing
    Senate Committee
    Senate Appropriations Hearing
    Placed on suspense file
    Senate Local Government Hearing
    Senate Committee
    Senate Local Government Hearing
    Do pass as amended, but first amend, and re-refer to the Committee on [Appropriations]
    Senate Natural Resources and Water Hearing
    Senate Committee
    Senate Natural Resources and Water Hearing
    Do pass, but first be re-referred to the Committee on [Local Government]
    Vote on Assembly Floor
    Assembly Floor
    Vote on Assembly Floor
    AB 93 Papan Assembly Third Reading
    Assembly Appropriations Hearing
    Assembly Committee
    Assembly Appropriations Hearing
    Do pass
    Assembly Local Government Hearing
    Assembly Committee
    Assembly Local Government Hearing
    Do pass as amended and be re-referred to the Committee on [Appropriations]
    Assembly Water, Parks, And Wildlife Hearing
    Assembly Committee
    Assembly Water, Parks, And Wildlife Hearing
    Do pass as amended and be re-referred to the Committee on [Local Government]
    Introduced
    Assembly Floor
    Introduced
    Read first time. To print.

    Contacts

    Profile
    Diane PapanD
    Assemblymember
    Bill Author
    Not Contacted
    Not Contacted
    0 of 1 row(s) selected.
    Page 1 of 1
    Select All Legislators
    Profile
    Diane PapanD
    Assemblymember
    Bill Author

    Get Involved

    Act Now!

    Email the authors or create an email template to send to all relevant legislators.

    Introduced By

    Diane Papan
    Diane PapanD
    California State Assembly Member
    70% progression
    Bill has passed both houses in identical form and is being prepared for the Governor (9/11/2025)

    Latest Voting History

    View History
    September 11, 2025
    PASS
    Assembly Floor
    Vote on Assembly Floor
    AyesNoesNVRTotalResult
    5916580PASS

    Key Takeaways

    • Requires data centers to report expected water usage to suppliers before obtaining business licenses.
    • Mandates annual water use reporting to suppliers for all data center license renewals.
    • Authorizes the Department of Water Resources to establish tiered efficiency standards for data centers.
    • Enforces compliance through self-certification under penalty of perjury.

    Get Involved

    Act Now!

    Email the authors or create an email template to send to all relevant legislators.

    Introduced By

    Diane Papan
    Diane PapanD
    California State Assembly Member

    Summary

    Assembly Member Papan's data center water monitoring legislation establishes new reporting requirements for facilities that house information technology equipment, requiring operators to submit water usage estimates and annual consumption data to their water suppliers as a condition of business licensing.

    The bill creates parallel requirements for city and county jurisdictions, defining data centers as facilities that house IT equipment consuming more than 10 kilowatts and 20 watts per square foot of conditioned floor area. Before obtaining an initial business license or permit, operators must provide their water supplier with projected water consumption estimates. License renewals require submission of annual water usage reports. Operators must certify compliance with these requirements under penalty of perjury during the licensing process.

    The Department of Water Resources receives authority to develop tiered efficiency standards for data centers based on water consumption patterns. The legislation designates both urban water suppliers and community water systems as eligible recipients of the usage data. The requirements apply uniformly across California, including charter cities, as the bill's findings declare water conservation a matter of statewide concern rather than a municipal affair.

    70% progression
    Bill has passed both houses in identical form and is being prepared for the Governor (9/11/2025)

    Key Dates

    Vote on Assembly Floor
    Assembly Floor
    Vote on Assembly Floor
    AB 93 Papan Concurrence in Senate Amendments
    Vote on Senate Floor
    Senate Floor
    Vote on Senate Floor
    Assembly 3rd Reading AB93 Papan By Laird
    Senate Appropriations Hearing
    Senate Committee
    Senate Appropriations Hearing
    Do pass as amended
    Senate Appropriations Hearing
    Senate Committee
    Senate Appropriations Hearing
    Placed on suspense file
    Senate Local Government Hearing
    Senate Committee
    Senate Local Government Hearing
    Do pass as amended, but first amend, and re-refer to the Committee on [Appropriations]
    Senate Natural Resources and Water Hearing
    Senate Committee
    Senate Natural Resources and Water Hearing
    Do pass, but first be re-referred to the Committee on [Local Government]
    Vote on Assembly Floor
    Assembly Floor
    Vote on Assembly Floor
    AB 93 Papan Assembly Third Reading
    Assembly Appropriations Hearing
    Assembly Committee
    Assembly Appropriations Hearing
    Do pass
    Assembly Local Government Hearing
    Assembly Committee
    Assembly Local Government Hearing
    Do pass as amended and be re-referred to the Committee on [Appropriations]
    Assembly Water, Parks, And Wildlife Hearing
    Assembly Committee
    Assembly Water, Parks, And Wildlife Hearing
    Do pass as amended and be re-referred to the Committee on [Local Government]
    Introduced
    Assembly Floor
    Introduced
    Read first time. To print.

    Latest Voting History

    View History
    September 11, 2025
    PASS
    Assembly Floor
    Vote on Assembly Floor
    AyesNoesNVRTotalResult
    5916580PASS

    Contacts

    Profile
    Diane PapanD
    Assemblymember
    Bill Author
    Not Contacted
    Not Contacted
    0 of 1 row(s) selected.
    Page 1 of 1
    Select All Legislators
    Profile
    Diane PapanD
    Assemblymember
    Bill Author