Ohio Rev. Code § 3723.10: Complaints.

Any individual, business entity, or government entity may file a complaint with the director of health concerning any radon tester, mitigation specialist, mitigation contractor, or operator of a radon laboratory or a training course approved under section 3723.07 of the Revised Code. The complainant's name shall be confidential and shall not be released without his written consent.

The director may investigate complaints and take action under section 3723.06, 3723.07, or division (A)(1) of section 3723.08 of the Revised Code as he considers necessary and appropriate.