Environmental protection: sewage; onsite wastewater treatment systems; regulate, and provide for assessments and evaluations. Amends secs. 12751, 12752, 12757 & 12771 of 1978 PA 368 (MCL 333.12751 et seq.) & adds pt. 128.

SB 771 regulates septic and other onsite wastewater systems to protect public health and water quality. It requires property owners with such systems to connect to public sewer lines when an "available public sanitary sewer system" is within 200 feet, unless an approved alternative system (like composting toilets) is used. Local health departments will enforce new rules under "part 128," including inspections and evaluations for non-compliant systems. The bill directly affects homeowners with septic systems, local health departments, and the Department of Environment, Great Lakes, and Energy, aiming to prevent health hazards and water pollution from poorly maintained systems.