Allow municipalities to review certain water and sewer systems

This bill allows Montana cities and towns to independently review and approve the design and construction of public water and sewer systems, including modifications to existing infrastructure. To exercise this authority, municipalities must hire or contract with a licensed professional engineer and establish a formal review program. The bill also requires these local review processes to comply with state environmental policies, property takings rules, and water quality standards. This change gives local governments more direct control over infrastructure projects within their jurisdictions while maintaining oversight through existing state regulations.