A bill for an act relating to the treatment of private sewage disposal systems, including monitoring, maintenance, and reporting requirements, and including applicability provisions.

This bill requires owners of private sewage disposal systems (for four or fewer homes or fewer than 16 people) to hire certified technicians for ongoing monitoring and maintenance, with contracts valid for the system's entire life. It mandates annual inspections for class A systems (media-based filters like peat moss) and biannual inspections for class B systems (mechanical systems), with all results reported to county sanitarians. Systems must be maintained per manufacturer specs, and county sanitarians will document inspections, submitting data to a public database (without personal details) starting July 1, 2026. The bill applies only to new systems installed after that date, prioritizing class A systems where feasible and restricting aerobic units to unsuitable soil sites.