71 Pa. Stat. § 1402
The commissioner may, from time to time, employ competent persons to render sanitary service and make or supervise practical and scientific investigations and examinations requiring expert skill, and prepare plans and reports relative thereto, and he may purchase such supplies and materials as may be necessary in carrying on the work of his department.
He may issue subpoenas to secure the attendance of witnesses, and compel them to testify in any matter or proceeding before him or his authorized agent.
He may issue warrants to any sheriff, constable, or policeman to apprehend and arrest such persons who disobey the quarantine orders or regulations of the department of health. Every warrant shall be forthwith executed by the officer to whom directed, who shall make due return of the execution thereof to the commissioner.
71 P.S. § 1402