The bill allows cities and towns in Montana to review and approve the design and construction of public water and sewer systems, as well as any extensions or alterations to existing systems. To carry out this review, the city or town must employ or contract with a licensed professional engineer and establish appropriate review programs. The review process must comply with various legal requirements, including the Montana Environmental Policy Act, real property takings requirements, and determinations of nondegradation and nonsignificance.

Additionally, the bill includes a codification instruction indicating that the new section regarding municipal review of public water and sewer construction is intended to be integrated into Title 75, chapter 6, part 1 of the Montana Code. This ensures that the provisions of the existing law will apply to the newly established review process.