California Legal Codes and Statutes

§ 13558.1

Added by Stats. 2018, Ch. 890, Sec. 1. (SB 966) Effective January 1, 2019.
(a)An onsite treated nonpotable water system shall not be installed except under a program established in compliance with subdivision (b) of Section 13558.
(b)This section does not apply to untreated graywater systems that are used exclusively for subsurface irrigation that are regulated by Chapter 15 (commencing with Section 1501.0) of the California Plumbing Code (Part 5 of Title 24 of the California Code of Regulations).
(c)This section does not apply to untreated rainwater systems that are used exclusively for surface, subsurface, or drip irrigation that are regulated by Chapter 16 (commencing with Section 1601.0) of the California Plumbing Code (Part 5 of Title 24 of the

California Code of Regulations).

Cite this section

Cal. Wat. Code § 13558.1 (2026)
https://ca.codecond.com/codes/wat/division-7-water-quality/chapter-7-water-reclamation/article-8-water-quality-criteria-for-onsite-treated-nonpotable-water-systems/section-13558.1

Other sections in Article 8 - Water Quality Criteria for Onsite Treated Nonpotable Water Systems

§ 13558§ 13558.1

This content is for reference, learning, and study purposes only. All legal text should be verified against the official California Legislative Information website, which is the authoritative source for California law. Data last processed: February 9, 2026.