The bill amends the Plumbing License Law of 1955 by updating Section 1017 to clarify the exceptions to the law's applicability. It specifies that the law does not apply to minor plumbing repairs, maintenance work for state institutions and school districts, and certain plumbing activities related to automatic sprinkler systems. Additionally, it introduces new exceptions, including plumbing work on private property that involves service mains and lines extending from public rights-of-way, as well as the installation of six-inch drains.

The bill also makes several changes to the language used in the existing law, such as replacing "and/or" with "or," and refining definitions related to backflow preventers and plumbing systems. The effective date for these amendments is set for November 1, 2026. Overall, the bill aims to streamline regulations and clarify the scope of plumbing work that falls outside the licensing requirements.