Ohio Septic & Well Water Rules

Ohio's sewage treatment system rules (OAC Chapter 3701-29) are set by the Ohio Department of Health and enforced by local health districts.

This is a short state page. It covers only the facts we've verified from official sources so far.

Registered contractors

Installers, service providers and septage haulers must register with each local health district where they work (OAC 3701-29-03). Registration expires at the end of each calendar year.
A service provider services, monitors, evaluates or samples systems but doesn't install or alter them. Ask your local health district for its list of registered contractors.

Do Ohio septic contractors need to be registered?

Yes. They must register with each local health district where they work, and renew every calendar year.

Last checked: October 21, 2026