Ohio septic rules (OAC 3701-29) explained for homeowners

Ohio Administrative Code Chapter 3701-29 holds the state rules for sewage treatment systems, including household septic systems. The current rules took effect on January 1, 2015. Local boards of health, like the Butler County General Health District, apply them.

Rule 3701-29-09 says no one may operate a sewage treatment system without an approved, valid operation permit from the board of health, and that the owner must follow the permit's terms. The operation permit takes effect when the board approves an installation, replacement, or alteration. It expires on a schedule the board sets, up to ten years, and can be renewed, suspended, or revoked.

The board sets the permit's terms for operation, monitoring, maintenance, and abandonment, including how often maintenance is required.

Under rule 3701-29-09, an operation permit must require a service contract for any household system covered by an NPDES permit, or when the state's approval of a system or component calls for one. A board of health can require one in other cases too.

Rule 3701-29-19 requires boards of health to run an operation and maintenance (O&M) program. Systems installed or altered after the rules took effect must be included. Each board sets its own timeline for phasing in older systems, based on factors like age, complexity, and risk.

Owners can often show the required maintenance through a service contract or service records instead of a board inspection. Records from an O&M inspection go to the board of health within 60 days.