SBDDW-22-001 Regulations for Onsite Treatment and Reuse of Nonpotable Water
California Water Code section 13558 requires the State Water Board to adopt regulations on or before December 1, 2022, for risk-based water quality standards for the onsite treatment and reuse of nonpotable water for nonpotable end uses in multifamily residential, commercial, and mixed-use buildings.
Water Code section 13558 also requires that on or before December 1, 2023, the Department of Housing and Community Development, in consultation with the State Water Board, is required to develop and propose for adoption any necessary corresponding building standards to support the risk-based water quality standards established by the State Water Board.
Pursuant to Water Code subsections 13558(c) and (d), the risk-based water quality standards will not address untreated graywater systems that are used exclusively for subsurface irrigation and untreated rainwater systems that are used exclusively for surface, subsurface, or drip irrigation.
Existing onsite treated nonpotable water systems in operation before the effective date of the regulations will be required to comply with the regulations within two years of the effective date.
A staff workshop for the regulations was held on August 1, 2022. Staff workshop information along with the video recording and presentation slides are available in the links below:
- Notice of Staff Workshop
- How to attend the virtual staff workshop
- Video Recording
- Presentation slides
Frequently Asked Questions
State Water Board staff has developed a set of frequently asked questions regarding the regulations. For any questions not addressed in the document, please contact firstname.lastname@example.org
Information and documentation pertaining to this regulatory action will be provided here, pending development of the regulations.
To be provided
History of Rulemaking Proceedings
- Notice of Proposed Rulemaking Published: TBD
- Close of the 45-Day Public Comment Period: TBD
- Date of Scheduled Public Hearings: TBD
- Date filed with Office of Administrative Law: TBD
- Approved by Office of Administrative Law: TBD
Filed with the Secretary of State: TBD
Effective Date: TBD
Status of Proposal
Staff has not started Rulemaking process
To be provided
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State Water Board Resolution
Information and documentation pertaining to a Resolution to adopt the proposed regulations will be provided here.
- California Water Code
California Water Code, Article 8. Water Quality Criteria for Onsite Treated Nonpotable Water Systems (Sections 13558-13558.1)
- National Blue Ribbon Commission for Onsite Non-potable Water Systems Resources for Onsite Non-Potable Water Programs (external link)