Amends the Metropolitan Water Reclamation District Article of the Illinois Pension Code. Provides that an ordinary disability benefit shall be allowed only if the employee is examined, at least annually, by a licensed health care professional appointed by the Board of Trustees of the Fund. In the definition of "salary", provides that, for a member on a disability benefit, salary is the salary on which the disability benefit is based. Provides that the Board has the power to issue subpoenas to compel the attendance of witnesses to testify before the Board and to compel the production of documents and records upon any matter concerning the Fund, including in conjunction with specified matters. Sets forth provisions concerning fees of witnesses for attendance and travel and compliance with a subpoena.