HSB 736: Relating to the treatment of private sewage disposal systems, including monitoring, maintenance, and reporting requirements, and including applicability provisions

What it does

This bill relates to the treatment of private sewage disposal systems, including monitoring, maintenance, and reporting requirements. The bill defines key terms, including “aerobic treatment unit”, “private sewage disposal system”, and “proprietary treatment system”, classifying proprietary treatment systems into class A systems, which are media-based or passive secondary treatment systems, and class B systems, which rely on mechanical aeration or fixed film processes. The bill requires, prior to installation of a private sewage disposal system, the owner to enter into a monitoring and maintenance contract with a certified technician.

House subcommittee · named February 17, 2026

• Rep. Norlin G. Mommsen (R) · norlin.mommsen@legis.iowa.gov
• Rep. Elinor A. Levin (D) · elinor.levin@legis.iowa.gov
• Rep. Derek Wulf (R) · derek.wulf@legis.iowa.gov

Lobbying · 2 for, 2 against

For: Iowa Rural Water Protection Coalition; Planet Care Biofilters

Against: Infiltrator Water Technologies; Iowa Association of Realtors

In plain words

1. February 12, 2026Filed in the House and sent to the Natural Resources committee
2. February 12, 2026House subcommittee named: Mommsen, Nielsen and Wulf
3. February 17, 2026House subcommittee named: Mommsen, Levin and Wulf
4. February 17, 2026Subcommittee recommended passing it with changes